Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1 | #include "cache.h" |
| 2 | #include "transport.h" |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 3 | #include "quote.h" |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 4 | #include "run-command.h" |
| 5 | #include "commit.h" |
| 6 | #include "diff.h" |
| 7 | #include "revision.h" |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 8 | #include "remote.h" |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 9 | #include "string-list.h" |
Ilari Liusvaara | 7851b1e | 2010-11-17 09:15:34 -0800 | [diff] [blame] | 10 | #include "thread-utils.h" |
Jeff King | c34fe63 | 2012-02-23 05:04:34 -0500 | [diff] [blame] | 11 | #include "sigchain.h" |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 12 | #include "argv-array.h" |
Felipe Contreras | 664059f | 2013-04-17 23:14:33 -0500 | [diff] [blame] | 13 | #include "refs.h" |
Jonathan Tan | e967ca3 | 2017-12-14 13:44:45 -0800 | [diff] [blame] | 14 | #include "transport-internal.h" |
Ilari Liusvaara | 7851b1e | 2010-11-17 09:15:34 -0800 | [diff] [blame] | 15 | |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 16 | static int debug; |
| 17 | |
Jonathan Nieder | 9cba13c | 2011-03-16 02:08:34 -0500 | [diff] [blame] | 18 | struct helper_data { |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 19 | const char *name; |
| 20 | struct child_process *helper; |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 21 | FILE *out; |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 22 | unsigned fetch : 1, |
Junio C Hamano | a24a32d | 2009-12-06 22:40:16 -0800 | [diff] [blame] | 23 | import : 1, |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 24 | bidi_import : 1, |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 25 | export : 1, |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 26 | option : 1, |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 27 | push : 1, |
| 28 | connect : 1, |
John Keeping | 0d957a4 | 2013-04-14 11:57:08 +0100 | [diff] [blame] | 29 | signed_tags : 1, |
Nguyễn Thái Ngọc Duy | 9ba3804 | 2013-07-21 15:18:05 +0700 | [diff] [blame] | 30 | check_connectivity : 1, |
Matthieu Moy | 597b831 | 2013-09-03 17:45:14 +0200 | [diff] [blame] | 31 | no_disconnect_req : 1, |
| 32 | no_private_update : 1; |
Sverre Rabbelier | a515ebe | 2011-07-16 15:03:40 +0200 | [diff] [blame] | 33 | char *export_marks; |
| 34 | char *import_marks; |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 35 | /* These go from remote name (as in "list") to private name */ |
| 36 | struct refspec *refspecs; |
| 37 | int refspec_nr; |
Ilari Liusvaara | 61b075b | 2009-12-09 17:26:31 +0200 | [diff] [blame] | 38 | /* Transport options for fetch-pack/send-pack (should one of |
| 39 | * those be invoked). |
| 40 | */ |
| 41 | struct git_transport_options transport_options; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 42 | }; |
| 43 | |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 44 | static void sendline(struct helper_data *helper, struct strbuf *buffer) |
| 45 | { |
| 46 | if (debug) |
| 47 | fprintf(stderr, "Debug: Remote helper: -> %s", buffer->buf); |
Jeff King | 06f46f2 | 2017-09-13 13:16:03 -0400 | [diff] [blame] | 48 | if (write_in_full(helper->helper->in, buffer->buf, buffer->len) < 0) |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 49 | die_errno("Full write to remote helper failed"); |
| 50 | } |
| 51 | |
Jeff King | c096955 | 2013-04-10 17:16:03 -0400 | [diff] [blame] | 52 | static int recvline_fh(FILE *helper, struct strbuf *buffer, const char *name) |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 53 | { |
| 54 | strbuf_reset(buffer); |
| 55 | if (debug) |
| 56 | fprintf(stderr, "Debug: Remote helper: Waiting...\n"); |
Junio C Hamano | 692dfdf | 2015-10-28 13:36:00 -0700 | [diff] [blame] | 57 | if (strbuf_getline(buffer, helper) == EOF) { |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 58 | if (debug) |
| 59 | fprintf(stderr, "Debug: Remote helper quit.\n"); |
Felipe Contreras | 5931b33 | 2014-04-12 15:33:29 -0500 | [diff] [blame] | 60 | return 1; |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | if (debug) |
| 64 | fprintf(stderr, "Debug: Remote helper: <- %s\n", buffer->buf); |
| 65 | return 0; |
| 66 | } |
| 67 | |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 68 | static int recvline(struct helper_data *helper, struct strbuf *buffer) |
| 69 | { |
Jeff King | c096955 | 2013-04-10 17:16:03 -0400 | [diff] [blame] | 70 | return recvline_fh(helper->out, buffer, helper->name); |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 71 | } |
| 72 | |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 73 | static void write_constant(int fd, const char *str) |
| 74 | { |
| 75 | if (debug) |
| 76 | fprintf(stderr, "Debug: Remote helper: -> %s", str); |
Jeff King | 06f46f2 | 2017-09-13 13:16:03 -0400 | [diff] [blame] | 77 | if (write_in_full(fd, str, strlen(str)) < 0) |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 78 | die_errno("Full write to remote helper failed"); |
| 79 | } |
| 80 | |
Stephen Boyd | c2e86ad | 2011-03-22 00:51:05 -0700 | [diff] [blame] | 81 | static const char *remove_ext_force(const char *url) |
Ilari Liusvaara | 25d5cc4 | 2009-12-09 17:26:29 +0200 | [diff] [blame] | 82 | { |
| 83 | if (url) { |
| 84 | const char *colon = strchr(url, ':'); |
| 85 | if (colon && colon[1] == ':') |
| 86 | return colon + 2; |
| 87 | } |
| 88 | return url; |
| 89 | } |
| 90 | |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 91 | static void do_take_over(struct transport *transport) |
| 92 | { |
| 93 | struct helper_data *data; |
| 94 | data = (struct helper_data *)transport->data; |
| 95 | transport_take_over(transport, data->helper); |
| 96 | fclose(data->out); |
| 97 | free(data); |
| 98 | } |
| 99 | |
Mike Hommey | 2879bc3 | 2015-02-13 14:24:45 +0900 | [diff] [blame] | 100 | static void standard_options(struct transport *t); |
| 101 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 102 | static struct child_process *get_helper(struct transport *transport) |
| 103 | { |
| 104 | struct helper_data *data = transport->data; |
| 105 | struct strbuf buf = STRBUF_INIT; |
| 106 | struct child_process *helper; |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 107 | const char **refspecs = NULL; |
| 108 | int refspec_nr = 0; |
| 109 | int refspec_alloc = 0; |
Ilari Liusvaara | 61b075b | 2009-12-09 17:26:31 +0200 | [diff] [blame] | 110 | int duped; |
Ilari Liusvaara | 6b02de3 | 2010-01-12 20:53:29 +0100 | [diff] [blame] | 111 | int code; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 112 | |
| 113 | if (data->helper) |
| 114 | return data->helper; |
| 115 | |
René Scharfe | 483bbd4 | 2014-08-19 21:10:48 +0200 | [diff] [blame] | 116 | helper = xmalloc(sizeof(*helper)); |
| 117 | child_process_init(helper); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 118 | helper->in = -1; |
| 119 | helper->out = -1; |
| 120 | helper->err = 0; |
Jeff King | e0ab2ac | 2014-05-15 04:34:18 -0400 | [diff] [blame] | 121 | argv_array_pushf(&helper->args, "git-remote-%s", data->name); |
| 122 | argv_array_push(&helper->args, transport->remote->name); |
| 123 | argv_array_push(&helper->args, remove_ext_force(transport->url)); |
Ilari Liusvaara | 6b02de3 | 2010-01-12 20:53:29 +0100 | [diff] [blame] | 124 | helper->git_cmd = 0; |
| 125 | helper->silent_exec_failure = 1; |
Dmitry Ivankov | e173587 | 2011-07-16 15:03:28 +0200 | [diff] [blame] | 126 | |
Jonathan Nieder | 4b0c3c7 | 2017-02-14 15:36:19 -0500 | [diff] [blame] | 127 | if (have_git_dir()) |
| 128 | argv_array_pushf(&helper->env_array, "%s=%s", |
| 129 | GIT_DIR_ENVIRONMENT, get_git_dir()); |
Dmitry Ivankov | e173587 | 2011-07-16 15:03:28 +0200 | [diff] [blame] | 130 | |
Ilari Liusvaara | 6b02de3 | 2010-01-12 20:53:29 +0100 | [diff] [blame] | 131 | code = start_command(helper); |
| 132 | if (code < 0 && errno == ENOENT) |
| 133 | die("Unable to find remote helper for '%s'", data->name); |
| 134 | else if (code != 0) |
| 135 | exit(code); |
| 136 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 137 | data->helper = helper; |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 138 | data->no_disconnect_req = 0; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 139 | |
Ilari Liusvaara | 61b075b | 2009-12-09 17:26:31 +0200 | [diff] [blame] | 140 | /* |
Junio C Hamano | 1a0c8df | 2016-01-13 18:32:23 -0800 | [diff] [blame] | 141 | * Open the output as FILE* so strbuf_getline_*() family of |
| 142 | * functions can be used. |
Ilari Liusvaara | 61b075b | 2009-12-09 17:26:31 +0200 | [diff] [blame] | 143 | * Do this with duped fd because fclose() will close the fd, |
| 144 | * and stuff like taking over will require the fd to remain. |
Ilari Liusvaara | 61b075b | 2009-12-09 17:26:31 +0200 | [diff] [blame] | 145 | */ |
| 146 | duped = dup(helper->out); |
| 147 | if (duped < 0) |
| 148 | die_errno("Can't dup helper output fd"); |
| 149 | data->out = xfdopen(duped, "r"); |
| 150 | |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 151 | write_constant(helper->in, "capabilities\n"); |
Daniel Barkalow | 2d14d65 | 2009-09-03 22:13:51 -0400 | [diff] [blame] | 152 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 153 | while (1) { |
Jeff King | 21a2d4a | 2014-06-18 15:47:17 -0400 | [diff] [blame] | 154 | const char *capname, *arg; |
Ilari Liusvaara | 28ed5b3 | 2009-12-09 17:26:28 +0200 | [diff] [blame] | 155 | int mandatory = 0; |
Felipe Contreras | 5931b33 | 2014-04-12 15:33:29 -0500 | [diff] [blame] | 156 | if (recvline(data, &buf)) |
| 157 | exit(128); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 158 | |
| 159 | if (!*buf.buf) |
| 160 | break; |
Ilari Liusvaara | 28ed5b3 | 2009-12-09 17:26:28 +0200 | [diff] [blame] | 161 | |
| 162 | if (*buf.buf == '*') { |
| 163 | capname = buf.buf + 1; |
| 164 | mandatory = 1; |
| 165 | } else |
| 166 | capname = buf.buf; |
| 167 | |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 168 | if (debug) |
Ilari Liusvaara | 28ed5b3 | 2009-12-09 17:26:28 +0200 | [diff] [blame] | 169 | fprintf(stderr, "Debug: Got cap %s\n", capname); |
| 170 | if (!strcmp(capname, "fetch")) |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 171 | data->fetch = 1; |
Ilari Liusvaara | 28ed5b3 | 2009-12-09 17:26:28 +0200 | [diff] [blame] | 172 | else if (!strcmp(capname, "option")) |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 173 | data->option = 1; |
Ilari Liusvaara | 28ed5b3 | 2009-12-09 17:26:28 +0200 | [diff] [blame] | 174 | else if (!strcmp(capname, "push")) |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 175 | data->push = 1; |
Ilari Liusvaara | 28ed5b3 | 2009-12-09 17:26:28 +0200 | [diff] [blame] | 176 | else if (!strcmp(capname, "import")) |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 177 | data->import = 1; |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 178 | else if (!strcmp(capname, "bidi-import")) |
| 179 | data->bidi_import = 1; |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 180 | else if (!strcmp(capname, "export")) |
| 181 | data->export = 1; |
Nguyễn Thái Ngọc Duy | 9ba3804 | 2013-07-21 15:18:05 +0700 | [diff] [blame] | 182 | else if (!strcmp(capname, "check-connectivity")) |
| 183 | data->check_connectivity = 1; |
Jeff King | 21a2d4a | 2014-06-18 15:47:17 -0400 | [diff] [blame] | 184 | else if (!data->refspecs && skip_prefix(capname, "refspec ", &arg)) { |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 185 | ALLOC_GROW(refspecs, |
| 186 | refspec_nr + 1, |
| 187 | refspec_alloc); |
Jeff King | 21a2d4a | 2014-06-18 15:47:17 -0400 | [diff] [blame] | 188 | refspecs[refspec_nr++] = xstrdup(arg); |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 189 | } else if (!strcmp(capname, "connect")) { |
| 190 | data->connect = 1; |
John Keeping | 0d957a4 | 2013-04-14 11:57:08 +0100 | [diff] [blame] | 191 | } else if (!strcmp(capname, "signed-tags")) { |
| 192 | data->signed_tags = 1; |
Jeff King | 21a2d4a | 2014-06-18 15:47:17 -0400 | [diff] [blame] | 193 | } else if (skip_prefix(capname, "export-marks ", &arg)) { |
| 194 | data->export_marks = xstrdup(arg); |
| 195 | } else if (skip_prefix(capname, "import-marks ", &arg)) { |
| 196 | data->import_marks = xstrdup(arg); |
Christian Couder | 5955654 | 2013-11-30 21:55:40 +0100 | [diff] [blame] | 197 | } else if (starts_with(capname, "no-private-update")) { |
Matthieu Moy | 597b831 | 2013-09-03 17:45:14 +0200 | [diff] [blame] | 198 | data->no_private_update = 1; |
Ilari Liusvaara | 28ed5b3 | 2009-12-09 17:26:28 +0200 | [diff] [blame] | 199 | } else if (mandatory) { |
Junio C Hamano | 9517e6b | 2010-02-03 21:23:18 -0800 | [diff] [blame] | 200 | die("Unknown mandatory capability %s. This remote " |
Pete Wyckoff | 82247e9 | 2012-04-29 20:28:45 -0400 | [diff] [blame] | 201 | "helper probably needs newer version of Git.", |
Ilari Liusvaara | 28ed5b3 | 2009-12-09 17:26:28 +0200 | [diff] [blame] | 202 | capname); |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 203 | } |
| 204 | } |
| 205 | if (refspecs) { |
| 206 | int i; |
| 207 | data->refspec_nr = refspec_nr; |
| 208 | data->refspecs = parse_fetch_refspec(refspec_nr, refspecs); |
Felipe Contreras | b120ef3 | 2013-05-08 20:16:56 -0500 | [diff] [blame] | 209 | for (i = 0; i < refspec_nr; i++) |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 210 | free((char *)refspecs[i]); |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 211 | free(refspecs); |
Felipe Contreras | a93b4a0 | 2013-04-17 23:14:31 -0500 | [diff] [blame] | 212 | } else if (data->import || data->bidi_import || data->export) { |
| 213 | warning("This remote helper should implement refspec capability."); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 214 | } |
Sverre Rabbelier | b962dbd | 2009-11-18 02:42:29 +0100 | [diff] [blame] | 215 | strbuf_release(&buf); |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 216 | if (debug) |
| 217 | fprintf(stderr, "Debug: Capabilities complete.\n"); |
Mike Hommey | 2879bc3 | 2015-02-13 14:24:45 +0900 | [diff] [blame] | 218 | standard_options(transport); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 219 | return data->helper; |
| 220 | } |
| 221 | |
| 222 | static int disconnect_helper(struct transport *transport) |
| 223 | { |
| 224 | struct helper_data *data = transport->data; |
Sverre Rabbelier | cc56732 | 2011-07-16 15:03:35 +0200 | [diff] [blame] | 225 | int res = 0; |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 226 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 227 | if (data->helper) { |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 228 | if (debug) |
| 229 | fprintf(stderr, "Debug: Disconnecting.\n"); |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 230 | if (!data->no_disconnect_req) { |
Jeff King | c34fe63 | 2012-02-23 05:04:34 -0500 | [diff] [blame] | 231 | /* |
| 232 | * Ignore write errors; there's nothing we can do, |
| 233 | * since we're about to close the pipe anyway. And the |
| 234 | * most likely error is EPIPE due to the helper dying |
| 235 | * to report an error itself. |
| 236 | */ |
| 237 | sigchain_push(SIGPIPE, SIG_IGN); |
| 238 | xwrite(data->helper->in, "\n", 1); |
| 239 | sigchain_pop(SIGPIPE); |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 240 | } |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 241 | close(data->helper->in); |
Ilari Liusvaara | 61b075b | 2009-12-09 17:26:31 +0200 | [diff] [blame] | 242 | close(data->helper->out); |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 243 | fclose(data->out); |
Sverre Rabbelier | cc56732 | 2011-07-16 15:03:35 +0200 | [diff] [blame] | 244 | res = finish_command(data->helper); |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 245 | FREE_AND_NULL(data->helper); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 246 | } |
Sverre Rabbelier | cc56732 | 2011-07-16 15:03:35 +0200 | [diff] [blame] | 247 | return res; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 248 | } |
| 249 | |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 250 | static const char *unsupported_options[] = { |
| 251 | TRANS_OPT_UPLOADPACK, |
| 252 | TRANS_OPT_RECEIVEPACK, |
| 253 | TRANS_OPT_THIN, |
| 254 | TRANS_OPT_KEEP |
| 255 | }; |
Felipe Contreras | 23cd01e | 2013-10-31 03:25:40 -0600 | [diff] [blame] | 256 | |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 257 | static const char *boolean_options[] = { |
| 258 | TRANS_OPT_THIN, |
| 259 | TRANS_OPT_KEEP, |
Junio C Hamano | 0ea47f9 | 2014-09-15 14:59:00 -0700 | [diff] [blame] | 260 | TRANS_OPT_FOLLOWTAGS, |
Nguyễn Thái Ngọc Duy | cccf74e | 2016-06-12 17:54:09 +0700 | [diff] [blame] | 261 | TRANS_OPT_DEEPEN_RELATIVE |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 262 | }; |
| 263 | |
Nguyễn Thái Ngọc Duy | 9318c5d | 2016-06-12 17:53:44 +0700 | [diff] [blame] | 264 | static int strbuf_set_helper_option(struct helper_data *data, |
| 265 | struct strbuf *buf) |
| 266 | { |
| 267 | int ret; |
| 268 | |
| 269 | sendline(data, buf); |
| 270 | if (recvline(data, buf)) |
| 271 | exit(128); |
| 272 | |
| 273 | if (!strcmp(buf->buf, "ok")) |
| 274 | ret = 0; |
| 275 | else if (starts_with(buf->buf, "error")) |
| 276 | ret = -1; |
| 277 | else if (!strcmp(buf->buf, "unsupported")) |
| 278 | ret = 1; |
| 279 | else { |
| 280 | warning("%s unexpectedly said: '%s'", data->name, buf->buf); |
| 281 | ret = 1; |
| 282 | } |
| 283 | return ret; |
| 284 | } |
| 285 | |
Nguyễn Thái Ngọc Duy | a45a260 | 2016-06-12 17:54:04 +0700 | [diff] [blame] | 286 | static int string_list_set_helper_option(struct helper_data *data, |
| 287 | const char *name, |
| 288 | struct string_list *list) |
| 289 | { |
| 290 | struct strbuf buf = STRBUF_INIT; |
| 291 | int i, ret = 0; |
| 292 | |
| 293 | for (i = 0; i < list->nr; i++) { |
| 294 | strbuf_addf(&buf, "option %s ", name); |
| 295 | quote_c_style(list->items[i].string, &buf, NULL, 0); |
| 296 | strbuf_addch(&buf, '\n'); |
| 297 | |
| 298 | if ((ret = strbuf_set_helper_option(data, &buf))) |
| 299 | break; |
| 300 | strbuf_reset(&buf); |
| 301 | } |
| 302 | strbuf_release(&buf); |
| 303 | return ret; |
| 304 | } |
| 305 | |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 306 | static int set_helper_option(struct transport *transport, |
| 307 | const char *name, const char *value) |
| 308 | { |
| 309 | struct helper_data *data = transport->data; |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 310 | struct strbuf buf = STRBUF_INIT; |
| 311 | int i, ret, is_bool = 0; |
| 312 | |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 313 | get_helper(transport); |
| 314 | |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 315 | if (!data->option) |
| 316 | return 1; |
| 317 | |
Nguyễn Thái Ngọc Duy | a45a260 | 2016-06-12 17:54:04 +0700 | [diff] [blame] | 318 | if (!strcmp(name, "deepen-not")) |
| 319 | return string_list_set_helper_option(data, name, |
| 320 | (struct string_list *)value); |
| 321 | |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 322 | for (i = 0; i < ARRAY_SIZE(unsupported_options); i++) { |
| 323 | if (!strcmp(name, unsupported_options[i])) |
| 324 | return 1; |
| 325 | } |
| 326 | |
| 327 | for (i = 0; i < ARRAY_SIZE(boolean_options); i++) { |
| 328 | if (!strcmp(name, boolean_options[i])) { |
| 329 | is_bool = 1; |
| 330 | break; |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | strbuf_addf(&buf, "option %s ", name); |
| 335 | if (is_bool) |
| 336 | strbuf_addstr(&buf, value ? "true" : "false"); |
| 337 | else |
| 338 | quote_c_style(value, &buf, NULL, 0); |
| 339 | strbuf_addch(&buf, '\n'); |
| 340 | |
Nguyễn Thái Ngọc Duy | 9318c5d | 2016-06-12 17:53:44 +0700 | [diff] [blame] | 341 | ret = strbuf_set_helper_option(data, &buf); |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 342 | strbuf_release(&buf); |
| 343 | return ret; |
| 344 | } |
| 345 | |
| 346 | static void standard_options(struct transport *t) |
| 347 | { |
| 348 | char buf[16]; |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 349 | int v = t->verbose; |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 350 | |
Tay Ray Chuan | d01b3c0 | 2010-02-24 20:50:26 +0800 | [diff] [blame] | 351 | set_helper_option(t, "progress", t->progress ? "true" : "false"); |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 352 | |
Jeff King | 8c5acfb | 2017-03-28 15:47:00 -0400 | [diff] [blame] | 353 | xsnprintf(buf, sizeof(buf), "%d", v + 1); |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 354 | set_helper_option(t, "verbosity", buf); |
Eric Wong | c915f11 | 2016-02-03 04:09:14 +0000 | [diff] [blame] | 355 | |
| 356 | switch (t->family) { |
| 357 | case TRANSPORT_FAMILY_ALL: |
| 358 | /* |
| 359 | * this is already the default, |
| 360 | * do not break old remote helpers by setting "all" here |
| 361 | */ |
| 362 | break; |
| 363 | case TRANSPORT_FAMILY_IPV4: |
| 364 | set_helper_option(t, "family", "ipv4"); |
| 365 | break; |
| 366 | case TRANSPORT_FAMILY_IPV6: |
| 367 | set_helper_option(t, "family", "ipv6"); |
| 368 | break; |
| 369 | } |
Shawn O. Pearce | ef08ef9 | 2009-10-30 17:47:29 -0700 | [diff] [blame] | 370 | } |
| 371 | |
Daniel Barkalow | f2a3715 | 2009-11-18 02:42:21 +0100 | [diff] [blame] | 372 | static int release_helper(struct transport *transport) |
| 373 | { |
Sverre Rabbelier | cc56732 | 2011-07-16 15:03:35 +0200 | [diff] [blame] | 374 | int res = 0; |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 375 | struct helper_data *data = transport->data; |
| 376 | free_refspec(data->refspec_nr, data->refspecs); |
| 377 | data->refspecs = NULL; |
Sverre Rabbelier | cc56732 | 2011-07-16 15:03:35 +0200 | [diff] [blame] | 378 | res = disconnect_helper(transport); |
Daniel Barkalow | f2a3715 | 2009-11-18 02:42:21 +0100 | [diff] [blame] | 379 | free(transport->data); |
Sverre Rabbelier | cc56732 | 2011-07-16 15:03:35 +0200 | [diff] [blame] | 380 | return res; |
Daniel Barkalow | f2a3715 | 2009-11-18 02:42:21 +0100 | [diff] [blame] | 381 | } |
| 382 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 383 | static int fetch_with_fetch(struct transport *transport, |
Daniel Barkalow | 3714831 | 2009-11-18 02:42:24 +0100 | [diff] [blame] | 384 | int nr_heads, struct ref **to_fetch) |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 385 | { |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 386 | struct helper_data *data = transport->data; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 387 | int i; |
| 388 | struct strbuf buf = STRBUF_INIT; |
| 389 | |
| 390 | for (i = 0; i < nr_heads; i++) { |
Linus Torvalds | 1088261 | 2009-08-05 01:01:59 -0400 | [diff] [blame] | 391 | const struct ref *posn = to_fetch[i]; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 392 | if (posn->status & REF_STATUS_UPTODATE) |
| 393 | continue; |
Daniel Barkalow | 2d14d65 | 2009-09-03 22:13:51 -0400 | [diff] [blame] | 394 | |
| 395 | strbuf_addf(&buf, "fetch %s %s\n", |
brian m. carlson | f4e54d0 | 2015-11-10 02:22:20 +0000 | [diff] [blame] | 396 | oid_to_hex(&posn->old_oid), |
Mike Hommey | 33cae54 | 2015-01-19 10:35:07 +0900 | [diff] [blame] | 397 | posn->symref ? posn->symref : posn->name); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 398 | } |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 399 | |
| 400 | strbuf_addch(&buf, '\n'); |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 401 | sendline(data, &buf); |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 402 | |
| 403 | while (1) { |
Felipe Contreras | 5931b33 | 2014-04-12 15:33:29 -0500 | [diff] [blame] | 404 | if (recvline(data, &buf)) |
| 405 | exit(128); |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 406 | |
Christian Couder | 5955654 | 2013-11-30 21:55:40 +0100 | [diff] [blame] | 407 | if (starts_with(buf.buf, "lock ")) { |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 408 | const char *name = buf.buf + 5; |
| 409 | if (transport->pack_lockfile) |
| 410 | warning("%s also locked %s", data->name, name); |
| 411 | else |
| 412 | transport->pack_lockfile = xstrdup(name); |
| 413 | } |
Nguyễn Thái Ngọc Duy | 9ba3804 | 2013-07-21 15:18:05 +0700 | [diff] [blame] | 414 | else if (data->check_connectivity && |
| 415 | data->transport_options.check_self_contained_and_connected && |
| 416 | !strcmp(buf.buf, "connectivity-ok")) |
| 417 | data->transport_options.self_contained_and_connected = 1; |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 418 | else if (!buf.len) |
| 419 | break; |
| 420 | else |
| 421 | warning("%s unexpectedly said: '%s'", data->name, buf.buf); |
| 422 | } |
| 423 | strbuf_release(&buf); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 424 | return 0; |
| 425 | } |
| 426 | |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 427 | static int get_importer(struct transport *transport, struct child_process *fastimport) |
| 428 | { |
| 429 | struct child_process *helper = get_helper(transport); |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 430 | struct helper_data *data = transport->data; |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 431 | int cat_blob_fd, code; |
René Scharfe | 483bbd4 | 2014-08-19 21:10:48 +0200 | [diff] [blame] | 432 | child_process_init(fastimport); |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 433 | fastimport->in = helper->out; |
Jeff King | 173fd1a | 2014-05-15 04:35:06 -0400 | [diff] [blame] | 434 | argv_array_push(&fastimport->args, "fast-import"); |
| 435 | argv_array_push(&fastimport->args, debug ? "--stats" : "--quiet"); |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 436 | |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 437 | if (data->bidi_import) { |
| 438 | cat_blob_fd = xdup(helper->in); |
Jeff King | 173fd1a | 2014-05-15 04:35:06 -0400 | [diff] [blame] | 439 | argv_array_pushf(&fastimport->args, "--cat-blob-fd=%d", cat_blob_fd); |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 440 | } |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 441 | fastimport->git_cmd = 1; |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 442 | |
| 443 | code = start_command(fastimport); |
| 444 | return code; |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 445 | } |
| 446 | |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 447 | static int get_exporter(struct transport *transport, |
| 448 | struct child_process *fastexport, |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 449 | struct string_list *revlist_args) |
| 450 | { |
Sverre Rabbelier | a515ebe | 2011-07-16 15:03:40 +0200 | [diff] [blame] | 451 | struct helper_data *data = transport->data; |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 452 | struct child_process *helper = get_helper(transport); |
Jeff King | 2aeae40 | 2014-05-15 04:34:44 -0400 | [diff] [blame] | 453 | int i; |
Felipe Contreras | 852e54b | 2014-04-12 15:33:31 -0500 | [diff] [blame] | 454 | |
René Scharfe | 8828f29 | 2014-10-28 21:52:34 +0100 | [diff] [blame] | 455 | child_process_init(fastexport); |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 456 | |
| 457 | /* we need to duplicate helper->in because we want to use it after |
| 458 | * fastexport is done with it. */ |
| 459 | fastexport->out = dup(helper->in); |
Jeff King | 2aeae40 | 2014-05-15 04:34:44 -0400 | [diff] [blame] | 460 | argv_array_push(&fastexport->args, "fast-export"); |
| 461 | argv_array_push(&fastexport->args, "--use-done-feature"); |
| 462 | argv_array_push(&fastexport->args, data->signed_tags ? |
| 463 | "--signed-tags=verbatim" : "--signed-tags=warn-strip"); |
| 464 | if (data->export_marks) |
| 465 | argv_array_pushf(&fastexport->args, "--export-marks=%s.tmp", data->export_marks); |
| 466 | if (data->import_marks) |
| 467 | argv_array_pushf(&fastexport->args, "--import-marks=%s", data->import_marks); |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 468 | |
| 469 | for (i = 0; i < revlist_args->nr; i++) |
Jeff King | 2aeae40 | 2014-05-15 04:34:44 -0400 | [diff] [blame] | 470 | argv_array_push(&fastexport->args, revlist_args->items[i].string); |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 471 | |
| 472 | fastexport->git_cmd = 1; |
| 473 | return start_command(fastexport); |
| 474 | } |
| 475 | |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 476 | static int fetch_with_import(struct transport *transport, |
| 477 | int nr_heads, struct ref **to_fetch) |
| 478 | { |
| 479 | struct child_process fastimport; |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 480 | struct helper_data *data = transport->data; |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 481 | int i; |
| 482 | struct ref *posn; |
| 483 | struct strbuf buf = STRBUF_INIT; |
| 484 | |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 485 | get_helper(transport); |
| 486 | |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 487 | if (get_importer(transport, &fastimport)) |
| 488 | die("Couldn't run fast-import"); |
| 489 | |
| 490 | for (i = 0; i < nr_heads; i++) { |
| 491 | posn = to_fetch[i]; |
| 492 | if (posn->status & REF_STATUS_UPTODATE) |
| 493 | continue; |
| 494 | |
Mike Hommey | 33cae54 | 2015-01-19 10:35:07 +0900 | [diff] [blame] | 495 | strbuf_addf(&buf, "import %s\n", |
| 496 | posn->symref ? posn->symref : posn->name); |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 497 | sendline(data, &buf); |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 498 | strbuf_reset(&buf); |
| 499 | } |
Sverre Rabbelier | 9504bc9 | 2011-07-16 15:03:38 +0200 | [diff] [blame] | 500 | |
| 501 | write_constant(data->helper->in, "\n"); |
Florian Achleitner | bfc366d | 2012-09-19 17:21:19 +0200 | [diff] [blame] | 502 | /* |
| 503 | * remote-helpers that advertise the bidi-import capability are required to |
| 504 | * buffer the complete batch of import commands until this newline before |
| 505 | * sending data to fast-import. |
| 506 | * These helpers read back data from fast-import on their stdin, which could |
| 507 | * be mixed with import commands, otherwise. |
| 508 | */ |
Sverre Rabbelier | 9504bc9 | 2011-07-16 15:03:38 +0200 | [diff] [blame] | 509 | |
Sverre Rabbelier | cc56732 | 2011-07-16 15:03:35 +0200 | [diff] [blame] | 510 | if (finish_command(&fastimport)) |
| 511 | die("Error while running fast-import"); |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 512 | |
Florian Achleitner | dff9d65 | 2012-07-30 16:31:18 +0200 | [diff] [blame] | 513 | /* |
| 514 | * The fast-import stream of a remote helper that advertises |
| 515 | * the "refspec" capability writes to the refs named after the |
| 516 | * right hand side of the first refspec matching each ref we |
| 517 | * were fetching. |
| 518 | * |
| 519 | * (If no "refspec" capability was specified, for historical |
Felipe Contreras | 7a43c55 | 2013-04-17 23:14:28 -0500 | [diff] [blame] | 520 | * reasons we default to the equivalent of *:*.) |
Florian Achleitner | dff9d65 | 2012-07-30 16:31:18 +0200 | [diff] [blame] | 521 | * |
| 522 | * Store the result in to_fetch[i].old_sha1. Callers such |
| 523 | * as "git fetch" can use the value to write feedback to the |
| 524 | * terminal, populate FETCH_HEAD, and determine what new value |
| 525 | * should be written to peer_ref if the update is a |
| 526 | * fast-forward or this is a forced update. |
| 527 | */ |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 528 | for (i = 0; i < nr_heads; i++) { |
Mike Hommey | 33cae54 | 2015-01-19 10:35:07 +0900 | [diff] [blame] | 529 | char *private, *name; |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 530 | posn = to_fetch[i]; |
| 531 | if (posn->status & REF_STATUS_UPTODATE) |
| 532 | continue; |
Mike Hommey | 33cae54 | 2015-01-19 10:35:07 +0900 | [diff] [blame] | 533 | name = posn->symref ? posn->symref : posn->name; |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 534 | if (data->refspecs) |
Mike Hommey | 33cae54 | 2015-01-19 10:35:07 +0900 | [diff] [blame] | 535 | private = apply_refspecs(data->refspecs, data->refspec_nr, name); |
Daniel Barkalow | 72ff894 | 2009-11-18 02:42:28 +0100 | [diff] [blame] | 536 | else |
Mike Hommey | 33cae54 | 2015-01-19 10:35:07 +0900 | [diff] [blame] | 537 | private = xstrdup(name); |
Michael Haggerty | d51b720 | 2011-09-15 23:10:38 +0200 | [diff] [blame] | 538 | if (private) { |
brian m. carlson | 34c290a | 2017-10-15 22:06:56 +0000 | [diff] [blame] | 539 | if (read_ref(private, &posn->old_oid) < 0) |
Stefan Beller | ae25fd3 | 2015-07-31 16:57:57 -0700 | [diff] [blame] | 540 | die("Could not read ref %s", private); |
Michael Haggerty | d51b720 | 2011-09-15 23:10:38 +0200 | [diff] [blame] | 541 | free(private); |
| 542 | } |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 543 | } |
Sverre Rabbelier | b962dbd | 2009-11-18 02:42:29 +0100 | [diff] [blame] | 544 | strbuf_release(&buf); |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 545 | return 0; |
| 546 | } |
| 547 | |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 548 | static int process_connect_service(struct transport *transport, |
| 549 | const char *name, const char *exec) |
| 550 | { |
| 551 | struct helper_data *data = transport->data; |
| 552 | struct strbuf cmdbuf = STRBUF_INIT; |
| 553 | struct child_process *helper; |
| 554 | int r, duped, ret = 0; |
| 555 | FILE *input; |
| 556 | |
| 557 | helper = get_helper(transport); |
| 558 | |
| 559 | /* |
| 560 | * Yes, dup the pipe another time, as we need unbuffered version |
| 561 | * of input pipe as FILE*. fclose() closes the underlying fd and |
| 562 | * stream buffering only can be changed before first I/O operation |
| 563 | * on it. |
| 564 | */ |
| 565 | duped = dup(helper->out); |
| 566 | if (duped < 0) |
| 567 | die_errno("Can't dup helper output fd"); |
| 568 | input = xfdopen(duped, "r"); |
| 569 | setvbuf(input, NULL, _IONBF, 0); |
| 570 | |
| 571 | /* |
| 572 | * Handle --upload-pack and friends. This is fire and forget... |
| 573 | * just warn if it fails. |
| 574 | */ |
| 575 | if (strcmp(name, exec)) { |
| 576 | r = set_helper_option(transport, "servpath", exec); |
| 577 | if (r > 0) |
| 578 | warning("Setting remote service path not supported by protocol."); |
| 579 | else if (r < 0) |
| 580 | warning("Invalid remote service path."); |
| 581 | } |
| 582 | |
| 583 | if (data->connect) |
| 584 | strbuf_addf(&cmdbuf, "connect %s\n", name); |
| 585 | else |
| 586 | goto exit; |
| 587 | |
| 588 | sendline(data, &cmdbuf); |
Felipe Contreras | 5931b33 | 2014-04-12 15:33:29 -0500 | [diff] [blame] | 589 | if (recvline_fh(input, &cmdbuf, name)) |
| 590 | exit(128); |
| 591 | |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 592 | if (!strcmp(cmdbuf.buf, "")) { |
| 593 | data->no_disconnect_req = 1; |
| 594 | if (debug) |
| 595 | fprintf(stderr, "Debug: Smart transport connection " |
| 596 | "ready.\n"); |
| 597 | ret = 1; |
| 598 | } else if (!strcmp(cmdbuf.buf, "fallback")) { |
| 599 | if (debug) |
| 600 | fprintf(stderr, "Debug: Falling back to dumb " |
| 601 | "transport.\n"); |
| 602 | } else |
| 603 | die("Unknown response to connect: %s", |
| 604 | cmdbuf.buf); |
| 605 | |
| 606 | exit: |
Rene Scharfe | 4168be8 | 2017-08-30 20:20:15 +0200 | [diff] [blame] | 607 | strbuf_release(&cmdbuf); |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 608 | fclose(input); |
| 609 | return ret; |
| 610 | } |
| 611 | |
| 612 | static int process_connect(struct transport *transport, |
| 613 | int for_push) |
| 614 | { |
| 615 | struct helper_data *data = transport->data; |
| 616 | const char *name; |
| 617 | const char *exec; |
| 618 | |
| 619 | name = for_push ? "git-receive-pack" : "git-upload-pack"; |
| 620 | if (for_push) |
| 621 | exec = data->transport_options.receivepack; |
| 622 | else |
| 623 | exec = data->transport_options.uploadpack; |
| 624 | |
| 625 | return process_connect_service(transport, name, exec); |
| 626 | } |
| 627 | |
Ilari Liusvaara | b236752 | 2009-12-09 17:26:33 +0200 | [diff] [blame] | 628 | static int connect_helper(struct transport *transport, const char *name, |
| 629 | const char *exec, int fd[2]) |
| 630 | { |
| 631 | struct helper_data *data = transport->data; |
| 632 | |
| 633 | /* Get_helper so connect is inited. */ |
| 634 | get_helper(transport); |
| 635 | if (!data->connect) |
| 636 | die("Operation not supported by protocol."); |
| 637 | |
| 638 | if (!process_connect_service(transport, name, exec)) |
| 639 | die("Can't connect to subservice %s.", name); |
| 640 | |
| 641 | fd[0] = data->helper->out; |
| 642 | fd[1] = data->helper->in; |
| 643 | return 0; |
| 644 | } |
| 645 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 646 | static int fetch(struct transport *transport, |
Daniel Barkalow | 3714831 | 2009-11-18 02:42:24 +0100 | [diff] [blame] | 647 | int nr_heads, struct ref **to_fetch) |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 648 | { |
| 649 | struct helper_data *data = transport->data; |
| 650 | int i, count; |
| 651 | |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 652 | if (process_connect(transport, 0)) { |
| 653 | do_take_over(transport); |
Jonathan Tan | e967ca3 | 2017-12-14 13:44:45 -0800 | [diff] [blame] | 654 | return transport->vtable->fetch(transport, nr_heads, to_fetch); |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 655 | } |
| 656 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 657 | count = 0; |
| 658 | for (i = 0; i < nr_heads; i++) |
| 659 | if (!(to_fetch[i]->status & REF_STATUS_UPTODATE)) |
| 660 | count++; |
| 661 | |
| 662 | if (!count) |
| 663 | return 0; |
| 664 | |
Mike Hommey | aab1beb | 2015-02-13 14:24:46 +0900 | [diff] [blame] | 665 | if (data->check_connectivity && |
| 666 | data->transport_options.check_self_contained_and_connected) |
| 667 | set_helper_option(transport, "check-connectivity", "true"); |
| 668 | |
| 669 | if (transport->cloning) |
| 670 | set_helper_option(transport, "cloning", "true"); |
| 671 | |
| 672 | if (data->transport_options.update_shallow) |
| 673 | set_helper_option(transport, "update-shallow", "true"); |
| 674 | |
Jeff Hostetler | 640d8b7 | 2017-12-08 15:58:40 +0000 | [diff] [blame] | 675 | if (data->transport_options.filter_options.choice) |
| 676 | set_helper_option( |
| 677 | transport, "filter", |
| 678 | data->transport_options.filter_options.filter_spec); |
| 679 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 680 | if (data->fetch) |
| 681 | return fetch_with_fetch(transport, nr_heads, to_fetch); |
| 682 | |
Daniel Barkalow | e65e91e | 2009-11-18 02:42:27 +0100 | [diff] [blame] | 683 | if (data->import) |
| 684 | return fetch_with_import(transport, nr_heads, to_fetch); |
| 685 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 686 | return -1; |
| 687 | } |
| 688 | |
Felipe Contreras | 664059f | 2013-04-17 23:14:33 -0500 | [diff] [blame] | 689 | static int push_update_ref_status(struct strbuf *buf, |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 690 | struct ref **ref, |
| 691 | struct ref *remote_refs) |
| 692 | { |
| 693 | char *refname, *msg; |
Felipe Contreras | f9e3c6b | 2013-11-12 14:56:57 -0600 | [diff] [blame] | 694 | int status, forced = 0; |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 695 | |
Christian Couder | 5955654 | 2013-11-30 21:55:40 +0100 | [diff] [blame] | 696 | if (starts_with(buf->buf, "ok ")) { |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 697 | status = REF_STATUS_OK; |
| 698 | refname = buf->buf + 3; |
Christian Couder | 5955654 | 2013-11-30 21:55:40 +0100 | [diff] [blame] | 699 | } else if (starts_with(buf->buf, "error ")) { |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 700 | status = REF_STATUS_REMOTE_REJECT; |
| 701 | refname = buf->buf + 6; |
| 702 | } else |
Pete Wyckoff | 82247e9 | 2012-04-29 20:28:45 -0400 | [diff] [blame] | 703 | die("expected ok/error, helper said '%s'", buf->buf); |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 704 | |
| 705 | msg = strchr(refname, ' '); |
| 706 | if (msg) { |
| 707 | struct strbuf msg_buf = STRBUF_INIT; |
| 708 | const char *end; |
| 709 | |
| 710 | *msg++ = '\0'; |
| 711 | if (!unquote_c_style(&msg_buf, msg, &end)) |
| 712 | msg = strbuf_detach(&msg_buf, NULL); |
| 713 | else |
| 714 | msg = xstrdup(msg); |
| 715 | strbuf_release(&msg_buf); |
| 716 | |
| 717 | if (!strcmp(msg, "no match")) { |
| 718 | status = REF_STATUS_NONE; |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 719 | FREE_AND_NULL(msg); |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 720 | } |
| 721 | else if (!strcmp(msg, "up to date")) { |
| 722 | status = REF_STATUS_UPTODATE; |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 723 | FREE_AND_NULL(msg); |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 724 | } |
| 725 | else if (!strcmp(msg, "non-fast forward")) { |
| 726 | status = REF_STATUS_REJECT_NONFASTFORWARD; |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 727 | FREE_AND_NULL(msg); |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 728 | } |
Chris Rorvick | dbfeddb | 2012-11-29 19:41:37 -0600 | [diff] [blame] | 729 | else if (!strcmp(msg, "already exists")) { |
| 730 | status = REF_STATUS_REJECT_ALREADY_EXISTS; |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 731 | FREE_AND_NULL(msg); |
Chris Rorvick | dbfeddb | 2012-11-29 19:41:37 -0600 | [diff] [blame] | 732 | } |
Junio C Hamano | 75e5c0d | 2013-01-23 13:55:30 -0800 | [diff] [blame] | 733 | else if (!strcmp(msg, "fetch first")) { |
| 734 | status = REF_STATUS_REJECT_FETCH_FIRST; |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 735 | FREE_AND_NULL(msg); |
Junio C Hamano | 75e5c0d | 2013-01-23 13:55:30 -0800 | [diff] [blame] | 736 | } |
| 737 | else if (!strcmp(msg, "needs force")) { |
| 738 | status = REF_STATUS_REJECT_NEEDS_FORCE; |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 739 | FREE_AND_NULL(msg); |
Junio C Hamano | 75e5c0d | 2013-01-23 13:55:30 -0800 | [diff] [blame] | 740 | } |
Junio C Hamano | 631b5ef | 2013-07-08 14:42:40 -0700 | [diff] [blame] | 741 | else if (!strcmp(msg, "stale info")) { |
| 742 | status = REF_STATUS_REJECT_STALE; |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 743 | FREE_AND_NULL(msg); |
Junio C Hamano | 631b5ef | 2013-07-08 14:42:40 -0700 | [diff] [blame] | 744 | } |
Felipe Contreras | f9e3c6b | 2013-11-12 14:56:57 -0600 | [diff] [blame] | 745 | else if (!strcmp(msg, "forced update")) { |
| 746 | forced = 1; |
Ævar Arnfjörð Bjarmason | 6a83d90 | 2017-06-15 23:15:46 +0000 | [diff] [blame] | 747 | FREE_AND_NULL(msg); |
Felipe Contreras | f9e3c6b | 2013-11-12 14:56:57 -0600 | [diff] [blame] | 748 | } |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 749 | } |
| 750 | |
| 751 | if (*ref) |
| 752 | *ref = find_ref_by_name(*ref, refname); |
| 753 | if (!*ref) |
| 754 | *ref = find_ref_by_name(remote_refs, refname); |
| 755 | if (!*ref) { |
| 756 | warning("helper reported unexpected status of %s", refname); |
Felipe Contreras | 664059f | 2013-04-17 23:14:33 -0500 | [diff] [blame] | 757 | return 1; |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 758 | } |
| 759 | |
| 760 | if ((*ref)->status != REF_STATUS_NONE) { |
| 761 | /* |
| 762 | * Earlier, the ref was marked not to be pushed, so ignore the ref |
| 763 | * status reported by the remote helper if the latter is 'no match'. |
| 764 | */ |
| 765 | if (status == REF_STATUS_NONE) |
Felipe Contreras | 664059f | 2013-04-17 23:14:33 -0500 | [diff] [blame] | 766 | return 1; |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 767 | } |
| 768 | |
| 769 | (*ref)->status = status; |
Max Horn | cf31f70 | 2014-02-21 10:55:59 +0100 | [diff] [blame] | 770 | (*ref)->forced_update |= forced; |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 771 | (*ref)->remote_status = msg; |
Felipe Contreras | 126aac5 | 2013-05-10 07:08:30 -0500 | [diff] [blame] | 772 | return !(status == REF_STATUS_OK); |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 773 | } |
| 774 | |
Felipe Contreras | 0551a06 | 2014-04-12 15:33:30 -0500 | [diff] [blame] | 775 | static int push_update_refs_status(struct helper_data *data, |
Felipe Contreras | 5a75353 | 2013-10-31 03:36:37 -0600 | [diff] [blame] | 776 | struct ref *remote_refs, |
| 777 | int flags) |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 778 | { |
| 779 | struct strbuf buf = STRBUF_INIT; |
| 780 | struct ref *ref = remote_refs; |
Felipe Contreras | 0551a06 | 2014-04-12 15:33:30 -0500 | [diff] [blame] | 781 | int ret = 0; |
| 782 | |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 783 | for (;;) { |
Felipe Contreras | 664059f | 2013-04-17 23:14:33 -0500 | [diff] [blame] | 784 | char *private; |
| 785 | |
Felipe Contreras | 0551a06 | 2014-04-12 15:33:30 -0500 | [diff] [blame] | 786 | if (recvline(data, &buf)) { |
| 787 | ret = 1; |
| 788 | break; |
| 789 | } |
| 790 | |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 791 | if (!buf.len) |
| 792 | break; |
| 793 | |
Felipe Contreras | 664059f | 2013-04-17 23:14:33 -0500 | [diff] [blame] | 794 | if (push_update_ref_status(&buf, &ref, remote_refs)) |
| 795 | continue; |
| 796 | |
Felipe Contreras | 5a75353 | 2013-10-31 03:36:37 -0600 | [diff] [blame] | 797 | if (flags & TRANSPORT_PUSH_DRY_RUN || !data->refspecs || data->no_private_update) |
Felipe Contreras | 664059f | 2013-04-17 23:14:33 -0500 | [diff] [blame] | 798 | continue; |
| 799 | |
| 800 | /* propagate back the update to the remote namespace */ |
| 801 | private = apply_refspecs(data->refspecs, data->refspec_nr, ref->name); |
| 802 | if (!private) |
| 803 | continue; |
brian m. carlson | ae07777 | 2017-10-15 22:06:51 +0000 | [diff] [blame] | 804 | update_ref("update by helper", private, &ref->new_oid, NULL, |
| 805 | 0, 0); |
Felipe Contreras | 664059f | 2013-04-17 23:14:33 -0500 | [diff] [blame] | 806 | free(private); |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 807 | } |
| 808 | strbuf_release(&buf); |
Felipe Contreras | 0551a06 | 2014-04-12 15:33:30 -0500 | [diff] [blame] | 809 | return ret; |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 810 | } |
| 811 | |
Dave Borowitz | 3026109 | 2015-08-19 11:26:46 -0400 | [diff] [blame] | 812 | static void set_common_push_options(struct transport *transport, |
| 813 | const char *name, int flags) |
| 814 | { |
| 815 | if (flags & TRANSPORT_PUSH_DRY_RUN) { |
| 816 | if (set_helper_option(transport, "dry-run", "true") != 0) |
| 817 | die("helper %s does not support dry-run", name); |
| 818 | } else if (flags & TRANSPORT_PUSH_CERT_ALWAYS) { |
| 819 | if (set_helper_option(transport, TRANS_OPT_PUSH_CERT, "true") != 0) |
| 820 | die("helper %s does not support --signed", name); |
| 821 | } else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED) { |
| 822 | if (set_helper_option(transport, TRANS_OPT_PUSH_CERT, "if-asked") != 0) |
| 823 | die("helper %s does not support --signed=if-asked", name); |
| 824 | } |
Stefan Beller | 438fc68 | 2017-02-08 14:04:00 -0800 | [diff] [blame] | 825 | |
| 826 | if (flags & TRANSPORT_PUSH_OPTIONS) { |
| 827 | struct string_list_item *item; |
| 828 | for_each_string_list_item(item, transport->push_options) |
| 829 | if (set_helper_option(transport, "push-option", item->string) != 0) |
| 830 | die("helper %s does not support 'push-option'", name); |
| 831 | } |
Dave Borowitz | 3026109 | 2015-08-19 11:26:46 -0400 | [diff] [blame] | 832 | } |
| 833 | |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 834 | static int push_refs_with_push(struct transport *transport, |
Junio C Hamano | 05c1eb1 | 2013-08-02 15:14:50 -0700 | [diff] [blame] | 835 | struct ref *remote_refs, int flags) |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 836 | { |
| 837 | int force_all = flags & TRANSPORT_PUSH_FORCE; |
| 838 | int mirror = flags & TRANSPORT_PUSH_MIRROR; |
| 839 | struct helper_data *data = transport->data; |
| 840 | struct strbuf buf = STRBUF_INIT; |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 841 | struct ref *ref; |
Junio C Hamano | 05c1eb1 | 2013-08-02 15:14:50 -0700 | [diff] [blame] | 842 | struct string_list cas_options = STRING_LIST_INIT_DUP; |
| 843 | struct string_list_item *cas_option; |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 844 | |
Johannes Schindelin | c0aa335 | 2011-03-22 13:50:08 +0100 | [diff] [blame] | 845 | get_helper(transport); |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 846 | if (!data->push) |
| 847 | return 1; |
| 848 | |
| 849 | for (ref = remote_refs; ref; ref = ref->next) { |
Tay Ray Chuan | 20e8b46 | 2010-01-08 10:12:42 +0800 | [diff] [blame] | 850 | if (!ref->peer_ref && !mirror) |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 851 | continue; |
| 852 | |
Tay Ray Chuan | 20e8b46 | 2010-01-08 10:12:42 +0800 | [diff] [blame] | 853 | /* Check for statuses set by set_ref_status_for_push() */ |
| 854 | switch (ref->status) { |
| 855 | case REF_STATUS_REJECT_NONFASTFORWARD: |
Junio C Hamano | 631b5ef | 2013-07-08 14:42:40 -0700 | [diff] [blame] | 856 | case REF_STATUS_REJECT_STALE: |
Chris Rorvick | dbfeddb | 2012-11-29 19:41:37 -0600 | [diff] [blame] | 857 | case REF_STATUS_REJECT_ALREADY_EXISTS: |
Tay Ray Chuan | 20e8b46 | 2010-01-08 10:12:42 +0800 | [diff] [blame] | 858 | case REF_STATUS_UPTODATE: |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 859 | continue; |
Tay Ray Chuan | 20e8b46 | 2010-01-08 10:12:42 +0800 | [diff] [blame] | 860 | default: |
| 861 | ; /* do nothing */ |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 862 | } |
| 863 | |
| 864 | if (force_all) |
| 865 | ref->force = 1; |
| 866 | |
| 867 | strbuf_addstr(&buf, "push "); |
| 868 | if (!ref->deletion) { |
| 869 | if (ref->force) |
| 870 | strbuf_addch(&buf, '+'); |
| 871 | if (ref->peer_ref) |
| 872 | strbuf_addstr(&buf, ref->peer_ref->name); |
| 873 | else |
brian m. carlson | f4e54d0 | 2015-11-10 02:22:20 +0000 | [diff] [blame] | 874 | strbuf_addstr(&buf, oid_to_hex(&ref->new_oid)); |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 875 | } |
| 876 | strbuf_addch(&buf, ':'); |
| 877 | strbuf_addstr(&buf, ref->name); |
| 878 | strbuf_addch(&buf, '\n'); |
Junio C Hamano | 05c1eb1 | 2013-08-02 15:14:50 -0700 | [diff] [blame] | 879 | |
| 880 | /* |
| 881 | * The "--force-with-lease" options without explicit |
| 882 | * values to expect have already been expanded into |
brian m. carlson | f4e54d0 | 2015-11-10 02:22:20 +0000 | [diff] [blame] | 883 | * the ref->old_oid_expect[] field; we can ignore |
Junio C Hamano | 05c1eb1 | 2013-08-02 15:14:50 -0700 | [diff] [blame] | 884 | * transport->smart_options->cas altogether and instead |
| 885 | * can enumerate them from the refs. |
| 886 | */ |
| 887 | if (ref->expect_old_sha1) { |
| 888 | struct strbuf cas = STRBUF_INIT; |
| 889 | strbuf_addf(&cas, "%s:%s", |
brian m. carlson | f4e54d0 | 2015-11-10 02:22:20 +0000 | [diff] [blame] | 890 | ref->name, oid_to_hex(&ref->old_oid_expect)); |
René Scharfe | 176cb97 | 2017-12-08 18:29:31 +0100 | [diff] [blame] | 891 | string_list_append_nodup(&cas_options, |
| 892 | strbuf_detach(&cas, NULL)); |
Junio C Hamano | 05c1eb1 | 2013-08-02 15:14:50 -0700 | [diff] [blame] | 893 | } |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 894 | } |
Junio C Hamano | 05c1eb1 | 2013-08-02 15:14:50 -0700 | [diff] [blame] | 895 | if (buf.len == 0) { |
| 896 | string_list_clear(&cas_options, 0); |
Clemens Buchacher | d8f67d2 | 2009-10-30 17:47:31 -0700 | [diff] [blame] | 897 | return 0; |
Junio C Hamano | 05c1eb1 | 2013-08-02 15:14:50 -0700 | [diff] [blame] | 898 | } |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 899 | |
Junio C Hamano | 05c1eb1 | 2013-08-02 15:14:50 -0700 | [diff] [blame] | 900 | for_each_string_list_item(cas_option, &cas_options) |
| 901 | set_helper_option(transport, "cas", cas_option->string); |
Dave Borowitz | 3026109 | 2015-08-19 11:26:46 -0400 | [diff] [blame] | 902 | set_common_push_options(transport, data->name, flags); |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 903 | |
| 904 | strbuf_addch(&buf, '\n'); |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 905 | sendline(data, &buf); |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 906 | strbuf_release(&buf); |
René Scharfe | 176cb97 | 2017-12-08 18:29:31 +0100 | [diff] [blame] | 907 | string_list_clear(&cas_options, 0); |
Sverre Rabbelier | d2e73c6 | 2011-07-16 15:03:34 +0200 | [diff] [blame] | 908 | |
Felipe Contreras | 0551a06 | 2014-04-12 15:33:30 -0500 | [diff] [blame] | 909 | return push_update_refs_status(data, remote_refs, flags); |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 910 | } |
| 911 | |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 912 | static int push_refs_with_export(struct transport *transport, |
| 913 | struct ref *remote_refs, int flags) |
| 914 | { |
| 915 | struct ref *ref; |
| 916 | struct child_process *helper, exporter; |
| 917 | struct helper_data *data = transport->data; |
Felipe Contreras | d98c815 | 2014-04-20 13:59:25 -0500 | [diff] [blame] | 918 | struct string_list revlist_args = STRING_LIST_INIT_DUP; |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 919 | struct strbuf buf = STRBUF_INIT; |
| 920 | |
Felipe Contreras | 21610d8 | 2013-04-17 23:14:30 -0500 | [diff] [blame] | 921 | if (!data->refspecs) |
| 922 | die("remote-helper doesn't support push; refspec needed"); |
| 923 | |
Dave Borowitz | 3026109 | 2015-08-19 11:26:46 -0400 | [diff] [blame] | 924 | set_common_push_options(transport, data->name, flags); |
Felipe Contreras | 510fa6f | 2013-11-12 14:56:56 -0600 | [diff] [blame] | 925 | if (flags & TRANSPORT_PUSH_FORCE) { |
| 926 | if (set_helper_option(transport, "force", "true") != 0) |
| 927 | warning("helper %s does not support 'force'", data->name); |
| 928 | } |
| 929 | |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 930 | helper = get_helper(transport); |
| 931 | |
| 932 | write_constant(helper->in, "export\n"); |
| 933 | |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 934 | for (ref = remote_refs; ref; ref = ref->next) { |
| 935 | char *private; |
brian m. carlson | 27912a0 | 2015-11-10 02:22:24 +0000 | [diff] [blame] | 936 | struct object_id oid; |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 937 | |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 938 | private = apply_refspecs(data->refspecs, data->refspec_nr, ref->name); |
brian m. carlson | e82caf3 | 2017-07-13 23:49:28 +0000 | [diff] [blame] | 939 | if (private && !get_oid(private, &oid)) { |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 940 | strbuf_addf(&buf, "^%s", private); |
René Scharfe | 176cb97 | 2017-12-08 18:29:31 +0100 | [diff] [blame] | 941 | string_list_append_nodup(&revlist_args, |
| 942 | strbuf_detach(&buf, NULL)); |
brian m. carlson | 27912a0 | 2015-11-10 02:22:24 +0000 | [diff] [blame] | 943 | oidcpy(&ref->old_oid, &oid); |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 944 | } |
Jeff King | 2faa152 | 2011-07-16 15:03:21 +0200 | [diff] [blame] | 945 | free(private); |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 946 | |
Felipe Contreras | 67c9c78 | 2013-05-20 20:02:45 -0500 | [diff] [blame] | 947 | if (ref->peer_ref) { |
Felipe Contreras | d98c815 | 2014-04-20 13:59:25 -0500 | [diff] [blame] | 948 | if (strcmp(ref->name, ref->peer_ref->name)) { |
Felipe Contreras | f3d0376 | 2014-04-20 13:59:29 -0500 | [diff] [blame] | 949 | if (!ref->deletion) { |
| 950 | const char *name; |
| 951 | int flag; |
Felipe Contreras | 9193f74 | 2014-04-20 13:59:26 -0500 | [diff] [blame] | 952 | |
Felipe Contreras | f3d0376 | 2014-04-20 13:59:29 -0500 | [diff] [blame] | 953 | /* Follow symbolic refs (mainly for HEAD). */ |
brian m. carlson | 49e6147 | 2017-10-15 22:07:09 +0000 | [diff] [blame] | 954 | name = resolve_ref_unsafe(ref->peer_ref->name, |
| 955 | RESOLVE_REF_READING, |
| 956 | &oid, &flag); |
Felipe Contreras | f3d0376 | 2014-04-20 13:59:29 -0500 | [diff] [blame] | 957 | if (!name || !(flag & REF_ISSYMREF)) |
| 958 | name = ref->peer_ref->name; |
| 959 | |
| 960 | strbuf_addf(&buf, "%s:%s", name, ref->name); |
| 961 | } else |
| 962 | strbuf_addf(&buf, ":%s", ref->name); |
Felipe Contreras | 9193f74 | 2014-04-20 13:59:26 -0500 | [diff] [blame] | 963 | |
Felipe Contreras | d98c815 | 2014-04-20 13:59:25 -0500 | [diff] [blame] | 964 | string_list_append(&revlist_args, "--refspec"); |
| 965 | string_list_append(&revlist_args, buf.buf); |
| 966 | strbuf_release(&buf); |
| 967 | } |
Felipe Contreras | f3d0376 | 2014-04-20 13:59:29 -0500 | [diff] [blame] | 968 | if (!ref->deletion) |
| 969 | string_list_append(&revlist_args, ref->peer_ref->name); |
Felipe Contreras | 67c9c78 | 2013-05-20 20:02:45 -0500 | [diff] [blame] | 970 | } |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 971 | } |
| 972 | |
Sverre Rabbelier | a515ebe | 2011-07-16 15:03:40 +0200 | [diff] [blame] | 973 | if (get_exporter(transport, &exporter, &revlist_args)) |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 974 | die("Couldn't run fast-export"); |
| 975 | |
Felipe Contreras | d98c815 | 2014-04-20 13:59:25 -0500 | [diff] [blame] | 976 | string_list_clear(&revlist_args, 1); |
| 977 | |
Sverre Rabbelier | cc56732 | 2011-07-16 15:03:35 +0200 | [diff] [blame] | 978 | if (finish_command(&exporter)) |
| 979 | die("Error while running fast-export"); |
Felipe Contreras | 3994e64 | 2014-04-12 15:33:32 -0500 | [diff] [blame] | 980 | if (push_update_refs_status(data, remote_refs, flags)) |
| 981 | return 1; |
| 982 | |
| 983 | if (data->export_marks) { |
| 984 | strbuf_addf(&buf, "%s.tmp", data->export_marks); |
| 985 | rename(buf.buf, data->export_marks); |
| 986 | strbuf_release(&buf); |
| 987 | } |
| 988 | |
| 989 | return 0; |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 990 | } |
| 991 | |
| 992 | static int push_refs(struct transport *transport, |
| 993 | struct ref *remote_refs, int flags) |
| 994 | { |
| 995 | struct helper_data *data = transport->data; |
| 996 | |
| 997 | if (process_connect(transport, 1)) { |
| 998 | do_take_over(transport); |
Jonathan Tan | e967ca3 | 2017-12-14 13:44:45 -0800 | [diff] [blame] | 999 | return transport->vtable->push_refs(transport, remote_refs, flags); |
Sverre Rabbelier | 73b49a7 | 2010-03-29 11:48:27 -0500 | [diff] [blame] | 1000 | } |
| 1001 | |
| 1002 | if (!remote_refs) { |
| 1003 | fprintf(stderr, "No refs in common and none specified; doing nothing.\n" |
| 1004 | "Perhaps you should specify a branch such as 'master'.\n"); |
| 1005 | return 0; |
| 1006 | } |
| 1007 | |
| 1008 | if (data->push) |
| 1009 | return push_refs_with_push(transport, remote_refs, flags); |
| 1010 | |
| 1011 | if (data->export) |
| 1012 | return push_refs_with_export(transport, remote_refs, flags); |
| 1013 | |
| 1014 | return -1; |
| 1015 | } |
| 1016 | |
| 1017 | |
Daniel Barkalow | f8ec916 | 2009-11-18 02:42:30 +0100 | [diff] [blame] | 1018 | static int has_attribute(const char *attrs, const char *attr) { |
| 1019 | int len; |
| 1020 | if (!attrs) |
| 1021 | return 0; |
| 1022 | |
| 1023 | len = strlen(attr); |
| 1024 | for (;;) { |
| 1025 | const char *space = strchrnul(attrs, ' '); |
| 1026 | if (len == space - attrs && !strncmp(attrs, attr, len)) |
| 1027 | return 1; |
| 1028 | if (!*space) |
| 1029 | return 0; |
| 1030 | attrs = space + 1; |
| 1031 | } |
| 1032 | } |
| 1033 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1034 | static struct ref *get_refs_list(struct transport *transport, int for_push) |
| 1035 | { |
Shawn O. Pearce | 292ce46 | 2009-10-30 17:47:28 -0700 | [diff] [blame] | 1036 | struct helper_data *data = transport->data; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1037 | struct child_process *helper; |
| 1038 | struct ref *ret = NULL; |
| 1039 | struct ref **tail = &ret; |
| 1040 | struct ref *posn; |
| 1041 | struct strbuf buf = STRBUF_INIT; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1042 | |
| 1043 | helper = get_helper(transport); |
Daniel Barkalow | 2d14d65 | 2009-09-03 22:13:51 -0400 | [diff] [blame] | 1044 | |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 1045 | if (process_connect(transport, for_push)) { |
| 1046 | do_take_over(transport); |
Jonathan Tan | e967ca3 | 2017-12-14 13:44:45 -0800 | [diff] [blame] | 1047 | return transport->vtable->get_refs_list(transport, for_push); |
Ilari Liusvaara | fa8c097 | 2009-12-09 17:26:32 +0200 | [diff] [blame] | 1048 | } |
| 1049 | |
Shawn O. Pearce | ae4efe1 | 2009-10-30 17:47:30 -0700 | [diff] [blame] | 1050 | if (data->push && for_push) |
| 1051 | write_str_in_full(helper->in, "list for-push\n"); |
| 1052 | else |
| 1053 | write_str_in_full(helper->in, "list\n"); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1054 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1055 | while (1) { |
| 1056 | char *eov, *eon; |
Felipe Contreras | 5931b33 | 2014-04-12 15:33:29 -0500 | [diff] [blame] | 1057 | if (recvline(data, &buf)) |
| 1058 | exit(128); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1059 | |
| 1060 | if (!*buf.buf) |
| 1061 | break; |
| 1062 | |
| 1063 | eov = strchr(buf.buf, ' '); |
| 1064 | if (!eov) |
| 1065 | die("Malformed response in ref list: %s", buf.buf); |
| 1066 | eon = strchr(eov + 1, ' '); |
| 1067 | *eov = '\0'; |
| 1068 | if (eon) |
| 1069 | *eon = '\0'; |
| 1070 | *tail = alloc_ref(eov + 1); |
| 1071 | if (buf.buf[0] == '@') |
| 1072 | (*tail)->symref = xstrdup(buf.buf + 1); |
| 1073 | else if (buf.buf[0] != '?') |
brian m. carlson | f4e54d0 | 2015-11-10 02:22:20 +0000 | [diff] [blame] | 1074 | get_oid_hex(buf.buf, &(*tail)->old_oid); |
Daniel Barkalow | f8ec916 | 2009-11-18 02:42:30 +0100 | [diff] [blame] | 1075 | if (eon) { |
| 1076 | if (has_attribute(eon + 1, "unchanged")) { |
| 1077 | (*tail)->status |= REF_STATUS_UPTODATE; |
brian m. carlson | 34c290a | 2017-10-15 22:06:56 +0000 | [diff] [blame] | 1078 | if (read_ref((*tail)->name, &(*tail)->old_oid) < 0) |
Vasco Almeida | 3c5077f | 2016-06-17 20:21:13 +0000 | [diff] [blame] | 1079 | die(_("Could not read ref %s"), |
Stefan Beller | ae25fd3 | 2015-07-31 16:57:57 -0700 | [diff] [blame] | 1080 | (*tail)->name); |
Daniel Barkalow | f8ec916 | 2009-11-18 02:42:30 +0100 | [diff] [blame] | 1081 | } |
| 1082 | } |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1083 | tail = &((*tail)->next); |
| 1084 | } |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 1085 | if (debug) |
| 1086 | fprintf(stderr, "Debug: Read ref listing.\n"); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1087 | strbuf_release(&buf); |
| 1088 | |
| 1089 | for (posn = ret; posn; posn = posn->next) |
| 1090 | resolve_remote_symref(posn, ret); |
| 1091 | |
| 1092 | return ret; |
| 1093 | } |
| 1094 | |
Jonathan Tan | e967ca3 | 2017-12-14 13:44:45 -0800 | [diff] [blame] | 1095 | static struct transport_vtable vtable = { |
| 1096 | set_helper_option, |
| 1097 | get_refs_list, |
| 1098 | fetch, |
| 1099 | push_refs, |
| 1100 | connect_helper, |
| 1101 | release_helper |
| 1102 | }; |
| 1103 | |
Daniel Barkalow | c9e388b | 2009-09-03 22:13:49 -0400 | [diff] [blame] | 1104 | int transport_helper_init(struct transport *transport, const char *name) |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1105 | { |
Brian Gesiak | 92e25b6 | 2014-05-27 00:33:56 +0900 | [diff] [blame] | 1106 | struct helper_data *data = xcalloc(1, sizeof(*data)); |
Daniel Barkalow | c9e388b | 2009-09-03 22:13:49 -0400 | [diff] [blame] | 1107 | data->name = name; |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1108 | |
Jeff King | a5adace | 2015-09-16 13:12:52 -0400 | [diff] [blame] | 1109 | transport_check_allowed(name); |
| 1110 | |
Ilari Liusvaara | bf3c523 | 2009-12-09 17:26:27 +0200 | [diff] [blame] | 1111 | if (getenv("GIT_TRANSPORT_HELPER_DEBUG")) |
| 1112 | debug = 1; |
| 1113 | |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1114 | transport->data = data; |
Jonathan Tan | e967ca3 | 2017-12-14 13:44:45 -0800 | [diff] [blame] | 1115 | transport->vtable = &vtable; |
Ilari Liusvaara | 61b075b | 2009-12-09 17:26:31 +0200 | [diff] [blame] | 1116 | transport->smart_options = &(data->transport_options); |
Daniel Barkalow | 6eb996b | 2009-08-05 01:01:53 -0400 | [diff] [blame] | 1117 | return 0; |
| 1118 | } |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1119 | |
| 1120 | /* |
| 1121 | * Linux pipes can buffer 65536 bytes at once (and most platforms can |
| 1122 | * buffer less), so attempt reads and writes with up to that size. |
| 1123 | */ |
| 1124 | #define BUFFERSIZE 65536 |
| 1125 | /* This should be enough to hold debugging message. */ |
| 1126 | #define PBUFFERSIZE 8192 |
| 1127 | |
| 1128 | /* Print bidirectional transfer loop debug message. */ |
Jeff King | 4621085 | 2013-07-09 20:18:40 -0400 | [diff] [blame] | 1129 | __attribute__((format (printf, 1, 2))) |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1130 | static void transfer_debug(const char *fmt, ...) |
| 1131 | { |
Martin Ågren | 6cdf8a7 | 2017-08-21 19:43:48 +0200 | [diff] [blame] | 1132 | /* |
| 1133 | * NEEDSWORK: This function is sometimes used from multiple threads, and |
| 1134 | * we end up using debug_enabled racily. That "should not matter" since |
| 1135 | * we always write the same value, but it's still wrong. This function |
| 1136 | * is listed in .tsan-suppressions for the time being. |
| 1137 | */ |
| 1138 | |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1139 | va_list args; |
| 1140 | char msgbuf[PBUFFERSIZE]; |
| 1141 | static int debug_enabled = -1; |
| 1142 | |
| 1143 | if (debug_enabled < 0) |
| 1144 | debug_enabled = getenv("GIT_TRANSLOOP_DEBUG") ? 1 : 0; |
| 1145 | if (!debug_enabled) |
| 1146 | return; |
| 1147 | |
| 1148 | va_start(args, fmt); |
| 1149 | vsnprintf(msgbuf, PBUFFERSIZE, fmt, args); |
| 1150 | va_end(args); |
| 1151 | fprintf(stderr, "Transfer loop debugging: %s\n", msgbuf); |
| 1152 | } |
| 1153 | |
| 1154 | /* Stream state: More data may be coming in this direction. */ |
Ville Skyttä | 2e3a16b | 2016-08-09 11:53:38 +0300 | [diff] [blame] | 1155 | #define SSTATE_TRANSFERRING 0 |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1156 | /* |
| 1157 | * Stream state: No more data coming in this direction, flushing rest of |
| 1158 | * data. |
| 1159 | */ |
| 1160 | #define SSTATE_FLUSHING 1 |
| 1161 | /* Stream state: Transfer in this direction finished. */ |
| 1162 | #define SSTATE_FINISHED 2 |
| 1163 | |
Ville Skyttä | 2e3a16b | 2016-08-09 11:53:38 +0300 | [diff] [blame] | 1164 | #define STATE_NEEDS_READING(state) ((state) <= SSTATE_TRANSFERRING) |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1165 | #define STATE_NEEDS_WRITING(state) ((state) <= SSTATE_FLUSHING) |
| 1166 | #define STATE_NEEDS_CLOSING(state) ((state) == SSTATE_FLUSHING) |
| 1167 | |
| 1168 | /* Unidirectional transfer. */ |
| 1169 | struct unidirectional_transfer { |
| 1170 | /* Source */ |
| 1171 | int src; |
| 1172 | /* Destination */ |
| 1173 | int dest; |
| 1174 | /* Is source socket? */ |
| 1175 | int src_is_sock; |
| 1176 | /* Is destination socket? */ |
| 1177 | int dest_is_sock; |
Stefano Lattarini | 41ccfdd | 2013-04-12 00:36:10 +0200 | [diff] [blame] | 1178 | /* Transfer state (TRANSFERRING/FLUSHING/FINISHED) */ |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1179 | int state; |
| 1180 | /* Buffer. */ |
| 1181 | char buf[BUFFERSIZE]; |
| 1182 | /* Buffer used. */ |
| 1183 | size_t bufuse; |
| 1184 | /* Name of source. */ |
| 1185 | const char *src_name; |
| 1186 | /* Name of destination. */ |
| 1187 | const char *dest_name; |
| 1188 | }; |
| 1189 | |
| 1190 | /* Closes the target (for writing) if transfer has finished. */ |
| 1191 | static void udt_close_if_finished(struct unidirectional_transfer *t) |
| 1192 | { |
| 1193 | if (STATE_NEEDS_CLOSING(t->state) && !t->bufuse) { |
| 1194 | t->state = SSTATE_FINISHED; |
| 1195 | if (t->dest_is_sock) |
| 1196 | shutdown(t->dest, SHUT_WR); |
| 1197 | else |
| 1198 | close(t->dest); |
| 1199 | transfer_debug("Closed %s.", t->dest_name); |
| 1200 | } |
| 1201 | } |
| 1202 | |
| 1203 | /* |
Li Peng | 832c0e5 | 2016-05-06 20:36:46 +0800 | [diff] [blame] | 1204 | * Tries to read data from source into buffer. If buffer is full, |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1205 | * no data is read. Returns 0 on success, -1 on error. |
| 1206 | */ |
| 1207 | static int udt_do_read(struct unidirectional_transfer *t) |
| 1208 | { |
| 1209 | ssize_t bytes; |
| 1210 | |
| 1211 | if (t->bufuse == BUFFERSIZE) |
| 1212 | return 0; /* No space for more. */ |
| 1213 | |
| 1214 | transfer_debug("%s is readable", t->src_name); |
| 1215 | bytes = read(t->src, t->buf + t->bufuse, BUFFERSIZE - t->bufuse); |
| 1216 | if (bytes < 0 && errno != EWOULDBLOCK && errno != EAGAIN && |
| 1217 | errno != EINTR) { |
Nguyễn Thái Ngọc Duy | 1fee1dc | 2016-05-08 16:47:57 +0700 | [diff] [blame] | 1218 | error_errno("read(%s) failed", t->src_name); |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1219 | return -1; |
| 1220 | } else if (bytes == 0) { |
| 1221 | transfer_debug("%s EOF (with %i bytes in buffer)", |
Jeff King | 4621085 | 2013-07-09 20:18:40 -0400 | [diff] [blame] | 1222 | t->src_name, (int)t->bufuse); |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1223 | t->state = SSTATE_FLUSHING; |
| 1224 | } else if (bytes > 0) { |
| 1225 | t->bufuse += bytes; |
| 1226 | transfer_debug("Read %i bytes from %s (buffer now at %i)", |
| 1227 | (int)bytes, t->src_name, (int)t->bufuse); |
| 1228 | } |
| 1229 | return 0; |
| 1230 | } |
| 1231 | |
| 1232 | /* Tries to write data from buffer into destination. If buffer is empty, |
| 1233 | * no data is written. Returns 0 on success, -1 on error. |
| 1234 | */ |
| 1235 | static int udt_do_write(struct unidirectional_transfer *t) |
| 1236 | { |
Nicolas Kaiser | 803dbdb | 2011-03-05 00:16:26 +0100 | [diff] [blame] | 1237 | ssize_t bytes; |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1238 | |
| 1239 | if (t->bufuse == 0) |
| 1240 | return 0; /* Nothing to write. */ |
| 1241 | |
| 1242 | transfer_debug("%s is writable", t->dest_name); |
Erik Faye-Lund | 7edc02f | 2014-01-17 15:17:09 +0100 | [diff] [blame] | 1243 | bytes = xwrite(t->dest, t->buf, t->bufuse); |
| 1244 | if (bytes < 0 && errno != EWOULDBLOCK) { |
Nguyễn Thái Ngọc Duy | 1fee1dc | 2016-05-08 16:47:57 +0700 | [diff] [blame] | 1245 | error_errno("write(%s) failed", t->dest_name); |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1246 | return -1; |
| 1247 | } else if (bytes > 0) { |
| 1248 | t->bufuse -= bytes; |
| 1249 | if (t->bufuse) |
| 1250 | memmove(t->buf, t->buf + bytes, t->bufuse); |
| 1251 | transfer_debug("Wrote %i bytes to %s (buffer now at %i)", |
| 1252 | (int)bytes, t->dest_name, (int)t->bufuse); |
| 1253 | } |
| 1254 | return 0; |
| 1255 | } |
| 1256 | |
| 1257 | |
| 1258 | /* State of bidirectional transfer loop. */ |
| 1259 | struct bidirectional_transfer_state { |
| 1260 | /* Direction from program to git. */ |
| 1261 | struct unidirectional_transfer ptg; |
| 1262 | /* Direction from git to program. */ |
| 1263 | struct unidirectional_transfer gtp; |
| 1264 | }; |
| 1265 | |
| 1266 | static void *udt_copy_task_routine(void *udt) |
| 1267 | { |
| 1268 | struct unidirectional_transfer *t = (struct unidirectional_transfer *)udt; |
| 1269 | while (t->state != SSTATE_FINISHED) { |
| 1270 | if (STATE_NEEDS_READING(t->state)) |
| 1271 | if (udt_do_read(t)) |
| 1272 | return NULL; |
| 1273 | if (STATE_NEEDS_WRITING(t->state)) |
| 1274 | if (udt_do_write(t)) |
| 1275 | return NULL; |
| 1276 | if (STATE_NEEDS_CLOSING(t->state)) |
| 1277 | udt_close_if_finished(t); |
| 1278 | } |
| 1279 | return udt; /* Just some non-NULL value. */ |
| 1280 | } |
| 1281 | |
| 1282 | #ifndef NO_PTHREADS |
| 1283 | |
| 1284 | /* |
Ondřej Bílka | 98e023d | 2013-07-29 10:18:21 +0200 | [diff] [blame] | 1285 | * Join thread, with appropriate errors on failure. Name is name for the |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1286 | * thread (for error messages). Returns 0 on success, 1 on failure. |
| 1287 | */ |
| 1288 | static int tloop_join(pthread_t thread, const char *name) |
| 1289 | { |
| 1290 | int err; |
| 1291 | void *tret; |
| 1292 | err = pthread_join(thread, &tret); |
| 1293 | if (!tret) { |
| 1294 | error("%s thread failed", name); |
| 1295 | return 1; |
| 1296 | } |
| 1297 | if (err) { |
| 1298 | error("%s thread failed to join: %s", name, strerror(err)); |
| 1299 | return 1; |
| 1300 | } |
| 1301 | return 0; |
| 1302 | } |
| 1303 | |
| 1304 | /* |
| 1305 | * Spawn the transfer tasks and then wait for them. Returns 0 on success, |
| 1306 | * -1 on failure. |
| 1307 | */ |
| 1308 | static int tloop_spawnwait_tasks(struct bidirectional_transfer_state *s) |
| 1309 | { |
| 1310 | pthread_t gtp_thread; |
| 1311 | pthread_t ptg_thread; |
| 1312 | int err; |
| 1313 | int ret = 0; |
| 1314 | err = pthread_create(>p_thread, NULL, udt_copy_task_routine, |
| 1315 | &s->gtp); |
| 1316 | if (err) |
| 1317 | die("Can't start thread for copying data: %s", strerror(err)); |
| 1318 | err = pthread_create(&ptg_thread, NULL, udt_copy_task_routine, |
| 1319 | &s->ptg); |
| 1320 | if (err) |
| 1321 | die("Can't start thread for copying data: %s", strerror(err)); |
| 1322 | |
| 1323 | ret |= tloop_join(gtp_thread, "Git to program copy"); |
| 1324 | ret |= tloop_join(ptg_thread, "Program to git copy"); |
| 1325 | return ret; |
| 1326 | } |
| 1327 | #else |
| 1328 | |
| 1329 | /* Close the source and target (for writing) for transfer. */ |
| 1330 | static void udt_kill_transfer(struct unidirectional_transfer *t) |
| 1331 | { |
| 1332 | t->state = SSTATE_FINISHED; |
| 1333 | /* |
| 1334 | * Socket read end left open isn't a disaster if nobody |
| 1335 | * attempts to read from it (mingw compat headers do not |
| 1336 | * have SHUT_RD)... |
| 1337 | * |
| 1338 | * We can't fully close the socket since otherwise gtp |
| 1339 | * task would first close the socket it sends data to |
| 1340 | * while closing the ptg file descriptors. |
| 1341 | */ |
| 1342 | if (!t->src_is_sock) |
| 1343 | close(t->src); |
| 1344 | if (t->dest_is_sock) |
| 1345 | shutdown(t->dest, SHUT_WR); |
| 1346 | else |
| 1347 | close(t->dest); |
| 1348 | } |
| 1349 | |
| 1350 | /* |
Ondřej Bílka | 98e023d | 2013-07-29 10:18:21 +0200 | [diff] [blame] | 1351 | * Join process, with appropriate errors on failure. Name is name for the |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1352 | * process (for error messages). Returns 0 on success, 1 on failure. |
| 1353 | */ |
| 1354 | static int tloop_join(pid_t pid, const char *name) |
| 1355 | { |
| 1356 | int tret; |
| 1357 | if (waitpid(pid, &tret, 0) < 0) { |
Nguyễn Thái Ngọc Duy | 1fee1dc | 2016-05-08 16:47:57 +0700 | [diff] [blame] | 1358 | error_errno("%s process failed to wait", name); |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1359 | return 1; |
| 1360 | } |
| 1361 | if (!WIFEXITED(tret) || WEXITSTATUS(tret)) { |
| 1362 | error("%s process failed", name); |
| 1363 | return 1; |
| 1364 | } |
| 1365 | return 0; |
| 1366 | } |
| 1367 | |
| 1368 | /* |
| 1369 | * Spawn the transfer tasks and then wait for them. Returns 0 on success, |
| 1370 | * -1 on failure. |
| 1371 | */ |
| 1372 | static int tloop_spawnwait_tasks(struct bidirectional_transfer_state *s) |
| 1373 | { |
| 1374 | pid_t pid1, pid2; |
| 1375 | int ret = 0; |
| 1376 | |
| 1377 | /* Fork thread #1: git to program. */ |
| 1378 | pid1 = fork(); |
| 1379 | if (pid1 < 0) |
| 1380 | die_errno("Can't start thread for copying data"); |
| 1381 | else if (pid1 == 0) { |
| 1382 | udt_kill_transfer(&s->ptg); |
| 1383 | exit(udt_copy_task_routine(&s->gtp) ? 0 : 1); |
| 1384 | } |
| 1385 | |
| 1386 | /* Fork thread #2: program to git. */ |
| 1387 | pid2 = fork(); |
| 1388 | if (pid2 < 0) |
| 1389 | die_errno("Can't start thread for copying data"); |
| 1390 | else if (pid2 == 0) { |
| 1391 | udt_kill_transfer(&s->gtp); |
| 1392 | exit(udt_copy_task_routine(&s->ptg) ? 0 : 1); |
| 1393 | } |
| 1394 | |
| 1395 | /* |
| 1396 | * Close both streams in parent as to not interfere with |
| 1397 | * end of file detection and wait for both tasks to finish. |
| 1398 | */ |
| 1399 | udt_kill_transfer(&s->gtp); |
| 1400 | udt_kill_transfer(&s->ptg); |
| 1401 | ret |= tloop_join(pid1, "Git to program copy"); |
| 1402 | ret |= tloop_join(pid2, "Program to git copy"); |
| 1403 | return ret; |
| 1404 | } |
| 1405 | #endif |
| 1406 | |
| 1407 | /* |
| 1408 | * Copies data from stdin to output and from input to stdout simultaneously. |
| 1409 | * Additionally filtering through given filter. If filter is NULL, uses |
| 1410 | * identity filter. |
| 1411 | */ |
| 1412 | int bidirectional_transfer_loop(int input, int output) |
| 1413 | { |
| 1414 | struct bidirectional_transfer_state state; |
| 1415 | |
| 1416 | /* Fill the state fields. */ |
| 1417 | state.ptg.src = input; |
| 1418 | state.ptg.dest = 1; |
| 1419 | state.ptg.src_is_sock = (input == output); |
| 1420 | state.ptg.dest_is_sock = 0; |
Ville Skyttä | 2e3a16b | 2016-08-09 11:53:38 +0300 | [diff] [blame] | 1421 | state.ptg.state = SSTATE_TRANSFERRING; |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1422 | state.ptg.bufuse = 0; |
| 1423 | state.ptg.src_name = "remote input"; |
| 1424 | state.ptg.dest_name = "stdout"; |
| 1425 | |
| 1426 | state.gtp.src = 0; |
| 1427 | state.gtp.dest = output; |
| 1428 | state.gtp.src_is_sock = 0; |
| 1429 | state.gtp.dest_is_sock = (input == output); |
Ville Skyttä | 2e3a16b | 2016-08-09 11:53:38 +0300 | [diff] [blame] | 1430 | state.gtp.state = SSTATE_TRANSFERRING; |
Ilari Liusvaara | 419f37d | 2010-10-12 19:39:41 +0300 | [diff] [blame] | 1431 | state.gtp.bufuse = 0; |
| 1432 | state.gtp.src_name = "stdin"; |
| 1433 | state.gtp.dest_name = "remote output"; |
| 1434 | |
| 1435 | return tloop_spawnwait_tasks(&state); |
| 1436 | } |