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* db/vcs-helper: Makefile: remove remnant of separate http/https/ftp helpers Use a clearer style to issue commands to remote helpers Make the "traditionally-supported" URLs a special case Makefile: install hardlinks for git-remote-<scheme> supported by libcurl if possible Makefile: do not link three copies of git-remote-* programs Makefile: git-http-fetch does not need expat http-fetch: Fix Makefile dependancies Add transport native helper executables to .gitignore git-http-fetch: not a builtin Use an external program to implement fetching with curl Add support for external programs for handling native fetches
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| git-remote-helpers(1) | ||
| ===================== | ||
|
|
||
| NAME | ||
| ---- | ||
| git-remote-helpers - Helper programs for interoperation with remote git | ||
|
|
||
| SYNOPSIS | ||
| -------- | ||
| 'git remote-<transport>' <remote> | ||
|
|
||
| DESCRIPTION | ||
| ----------- | ||
|
|
||
| These programs are normally not used directly by end users, but are | ||
| invoked by various git programs that interact with remote repositories | ||
| when the repository they would operate on will be accessed using | ||
| transport code not linked into the main git binary. Various particular | ||
| helper programs will behave as documented here. | ||
|
|
||
| COMMANDS | ||
| -------- | ||
|
|
||
| Commands are given by the caller on the helper's standard input, one per line. | ||
|
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| 'capabilities':: | ||
| Lists the capabilities of the helper, one per line, ending | ||
| with a blank line. | ||
|
|
||
| 'list':: | ||
| Lists the refs, one per line, in the format "<value> <name> | ||
| [<attr> ...]". The value may be a hex sha1 hash, "@<dest>" for | ||
| a symref, or "?" to indicate that the helper could not get the | ||
| value of the ref. A space-separated list of attributes follows | ||
| the name; unrecognized attributes are ignored. After the | ||
| complete list, outputs a blank line. | ||
|
|
||
| 'fetch' <sha1> <name>:: | ||
| Fetches the given object, writing the necessary objects to the | ||
| database. Outputs a blank line when the fetch is | ||
| complete. Only objects which were reported in the ref list | ||
| with a sha1 may be fetched this way. | ||
| + | ||
| Supported if the helper has the "fetch" capability. | ||
|
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||
| If a fatal error occurs, the program writes the error message to | ||
| stderr and exits. The caller should expect that a suitable error | ||
| message has been printed if the child closes the connection without | ||
| completing a valid response for the current command. | ||
|
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| Additional commands may be supported, as may be determined from | ||
| capabilities reported by the helper. | ||
|
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| CAPABILITIES | ||
| ------------ | ||
|
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| 'fetch':: | ||
| This helper supports the 'fetch' command. | ||
|
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| REF LIST ATTRIBUTES | ||
| ------------------- | ||
|
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| None are defined yet, but the caller must accept any which are supplied. | ||
|
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| Documentation | ||
| ------------- | ||
| Documentation by Daniel Barkalow. | ||
|
|
||
| GIT | ||
| --- | ||
| Part of the linkgit:git[1] suite |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| #include "cache.h" | ||
| #include "remote.h" | ||
| #include "strbuf.h" | ||
| #include "walker.h" | ||
| #include "http.h" | ||
|
|
||
| static struct ref *get_refs(struct walker *walker, const char *url) | ||
| { | ||
| struct strbuf buffer = STRBUF_INIT; | ||
| char *data, *start, *mid; | ||
| char *ref_name; | ||
| char *refs_url; | ||
| int i = 0; | ||
| int http_ret; | ||
|
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| struct ref *refs = NULL; | ||
| struct ref *ref = NULL; | ||
| struct ref *last_ref = NULL; | ||
|
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| refs_url = xmalloc(strlen(url) + 11); | ||
| sprintf(refs_url, "%s/info/refs", url); | ||
|
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| http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE); | ||
| switch (http_ret) { | ||
| case HTTP_OK: | ||
| break; | ||
| case HTTP_MISSING_TARGET: | ||
| die("%s not found: did you run git update-server-info on the" | ||
| " server?", refs_url); | ||
| default: | ||
| http_error(refs_url, http_ret); | ||
| die("HTTP request failed"); | ||
| } | ||
|
|
||
| data = buffer.buf; | ||
| start = NULL; | ||
| mid = data; | ||
| while (i < buffer.len) { | ||
| if (!start) { | ||
| start = &data[i]; | ||
| } | ||
| if (data[i] == '\t') | ||
| mid = &data[i]; | ||
| if (data[i] == '\n') { | ||
| data[i] = 0; | ||
| ref_name = mid + 1; | ||
| ref = xmalloc(sizeof(struct ref) + | ||
| strlen(ref_name) + 1); | ||
| memset(ref, 0, sizeof(struct ref)); | ||
| strcpy(ref->name, ref_name); | ||
| get_sha1_hex(start, ref->old_sha1); | ||
| if (!refs) | ||
| refs = ref; | ||
| if (last_ref) | ||
| last_ref->next = ref; | ||
| last_ref = ref; | ||
| start = NULL; | ||
| } | ||
| i++; | ||
| } | ||
|
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| strbuf_release(&buffer); | ||
|
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| ref = alloc_ref("HEAD"); | ||
| if (!walker->fetch_ref(walker, ref) && | ||
| !resolve_remote_symref(ref, refs)) { | ||
| ref->next = refs; | ||
| refs = ref; | ||
| } else { | ||
| free(ref); | ||
| } | ||
|
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| strbuf_release(&buffer); | ||
| free(refs_url); | ||
| return refs; | ||
| } | ||
|
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| int main(int argc, const char **argv) | ||
| { | ||
| struct remote *remote; | ||
| struct strbuf buf = STRBUF_INIT; | ||
| const char *url; | ||
| struct walker *walker = NULL; | ||
|
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| setup_git_directory(); | ||
| if (argc < 2) { | ||
| fprintf(stderr, "Remote needed\n"); | ||
| return 1; | ||
| } | ||
|
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| remote = remote_get(argv[1]); | ||
|
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| if (argc > 2) { | ||
| url = argv[2]; | ||
| } else { | ||
| url = remote->url[0]; | ||
| } | ||
|
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||
| do { | ||
| if (strbuf_getline(&buf, stdin, '\n') == EOF) | ||
| break; | ||
| if (!prefixcmp(buf.buf, "fetch ")) { | ||
| char *obj = buf.buf + strlen("fetch "); | ||
| if (!walker) | ||
| walker = get_http_walker(url, remote); | ||
| walker->get_all = 1; | ||
| walker->get_tree = 1; | ||
| walker->get_history = 1; | ||
| walker->get_verbosely = 0; | ||
| walker->get_recover = 0; | ||
| if (walker_fetch(walker, 1, &obj, NULL, NULL)) | ||
| die("Fetch failed."); | ||
| printf("\n"); | ||
| fflush(stdout); | ||
| } else if (!strcmp(buf.buf, "list")) { | ||
| struct ref *refs; | ||
| struct ref *posn; | ||
| if (!walker) | ||
| walker = get_http_walker(url, remote); | ||
| refs = get_refs(walker, url); | ||
| for (posn = refs; posn; posn = posn->next) { | ||
| if (posn->symref) | ||
| printf("@%s %s\n", posn->symref, posn->name); | ||
| else | ||
| printf("%s %s\n", sha1_to_hex(posn->old_sha1), posn->name); | ||
| } | ||
| printf("\n"); | ||
| fflush(stdout); | ||
| } else if (!strcmp(buf.buf, "capabilities")) { | ||
| printf("fetch\n"); | ||
| printf("\n"); | ||
| fflush(stdout); | ||
| } else { | ||
| return 1; | ||
| } | ||
| strbuf_reset(&buf); | ||
| } while (1); | ||
| return 0; | ||
| } |
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