#include "cache.h" #include "commit.h" #include "tag.h" #include "blob.h" #include "http.h" #include "refs.h" #include "diff.h" #include "revision.h" #include "exec_cmd.h" #include "remote.h" #include "list-objects.h" #include "sigchain.h" #include static const char http_push_usage[] = "git http-push [--all] [--dry-run] [--force] [--verbose] [...]\n"; #ifndef XML_STATUS_OK enum XML_Status { XML_STATUS_OK = 1, XML_STATUS_ERROR = 0 }; #define XML_STATUS_OK 1 #define XML_STATUS_ERROR 0 #endif #define PREV_BUF_SIZE 4096 /* DAV methods */ #define DAV_LOCK "LOCK" #define DAV_MKCOL "MKCOL" #define DAV_MOVE "MOVE" #define DAV_PROPFIND "PROPFIND" #define DAV_PUT "PUT" #define DAV_UNLOCK "UNLOCK" #define DAV_DELETE "DELETE" /* DAV lock flags */ #define DAV_PROP_LOCKWR (1u << 0) #define DAV_PROP_LOCKEX (1u << 1) #define DAV_LOCK_OK (1u << 2) /* DAV XML properties */ #define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry" #define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write" #define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive" #define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href" #define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout" #define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href" #define DAV_PROPFIND_RESP ".multistatus.response" #define DAV_PROPFIND_NAME ".multistatus.response.href" #define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection" /* DAV request body templates */ #define PROPFIND_SUPPORTEDLOCK_REQUEST "\n\n\n\n\n" #define PROPFIND_ALL_REQUEST "\n\n\n" #define LOCK_REQUEST "\n\n\n\n\nmailto:%s\n\n" #define LOCK_TIME 600 #define LOCK_REFRESH 30 /* bits #0-15 in revision.h */ #define LOCAL (1u<<16) #define REMOTE (1u<<17) #define FETCHING (1u<<18) #define PUSHING (1u<<19) /* We allow "recursive" symbolic refs. Only within reason, though */ #define MAXDEPTH 5 static int pushing; static int aborted; static signed char remote_dir_exists[256]; static int push_verbosely; static int push_all = MATCH_REFS_NONE; static int force_all; static int dry_run; static int helper_status; static struct object_list *objects; struct repo { char *url; char *path; int path_len; int has_info_refs; int can_update_info_refs; int has_info_packs; struct packed_git *packs; struct remote_lock *locks; }; static struct repo *repo; enum transfer_state { NEED_FETCH, RUN_FETCH_LOOSE, RUN_FETCH_PACKED, NEED_PUSH, RUN_MKCOL, RUN_PUT, RUN_MOVE, ABORTED, COMPLETE }; struct transfer_request { struct object *obj; char *url; char *dest; struct remote_lock *lock; struct curl_slist *headers; struct buffer buffer; enum transfer_state state; CURLcode curl_result; char errorstr[CURL_ERROR_SIZE]; long http_code; void *userData; struct active_request_slot *slot; struct transfer_request *next; }; static struct transfer_request *request_queue_head; struct xml_ctx { char *name; int len; char *cdata; void (*userFunc)(struct xml_ctx *ctx, int tag_closed); void *userData; }; struct remote_lock { char *url; char *owner; char *token; char tmpfile_suffix[41]; time_t start_time; long timeout; int refreshing; struct remote_lock *next; }; /* Flags that control remote_ls processing */ #define PROCESS_FILES (1u << 0) #define PROCESS_DIRS (1u << 1) #define RECURSIVE (1u << 2) /* Flags that remote_ls passes to callback functions */ #define IS_DIR (1u << 0) struct remote_ls_ctx { char *path; void (*userFunc)(struct remote_ls_ctx *ls); void *userData; int flags; char *dentry_name; int dentry_flags; struct remote_ls_ctx *parent; }; /* get_dav_token_headers options */ enum dav_header_flag { DAV_HEADER_IF = (1u << 0), DAV_HEADER_LOCK = (1u << 1), DAV_HEADER_TIMEOUT = (1u << 2) }; static char *xml_entities(const char *s) { struct strbuf buf = STRBUF_INIT; while (*s) { size_t len = strcspn(s, "\"<>&"); strbuf_add(&buf, s, len); s += len; switch (*s) { case '"': strbuf_addstr(&buf, """); break; case '<': strbuf_addstr(&buf, "<"); break; case '>': strbuf_addstr(&buf, ">"); break; case '&': strbuf_addstr(&buf, "&"); break; case 0: return strbuf_detach(&buf, NULL); } s++; } return strbuf_detach(&buf, NULL); } static void curl_setup_http_get(CURL *curl, const char *url, const char *custom_req) { curl_easy_setopt(curl, CURLOPT_HTTPGET, 1); curl_easy_setopt(curl, CURLOPT_URL, url); curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, custom_req); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_null); } static void curl_setup_http(CURL *curl, const char *url, const char *custom_req, struct buffer *buffer, curl_write_callback write_fn) { curl_easy_setopt(curl, CURLOPT_PUT, 1); curl_easy_setopt(curl, CURLOPT_URL, url); curl_easy_setopt(curl, CURLOPT_INFILE, buffer); curl_easy_setopt(curl, CURLOPT_INFILESIZE, buffer->buf.len); curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer); #ifndef NO_CURL_IOCTL curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer); curl_easy_setopt(curl, CURLOPT_IOCTLDATA, &buffer); #endif curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_fn); curl_easy_setopt(curl, CURLOPT_NOBODY, 0); curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, custom_req); curl_easy_setopt(curl, CURLOPT_UPLOAD, 1); } static struct curl_slist *get_dav_token_headers(struct remote_lock *lock, enum dav_header_flag options) { struct strbuf buf = STRBUF_INIT; struct curl_slist *dav_headers = NULL; if (options & DAV_HEADER_IF) { strbuf_addf(&buf, "If: (<%s>)", lock->token); dav_headers = curl_slist_append(dav_headers, buf.buf); strbuf_reset(&buf); } if (options & DAV_HEADER_LOCK) { strbuf_addf(&buf, "Lock-Token: <%s>", lock->token); dav_headers = curl_slist_append(dav_headers, buf.buf); strbuf_reset(&buf); } if (options & DAV_HEADER_TIMEOUT) { strbuf_addf(&buf, "Timeout: Second-%ld", lock->timeout); dav_headers = curl_slist_append(dav_headers, buf.buf); strbuf_reset(&buf); } strbuf_release(&buf); return dav_headers; } static void finish_request(struct transfer_request *request); static void release_request(struct transfer_request *request); static void process_response(void *callback_data) { struct transfer_request *request = (struct transfer_request *)callback_data; finish_request(request); } #ifdef USE_CURL_MULTI static void start_fetch_loose(struct transfer_request *request) { struct active_request_slot *slot; struct http_object_request *obj_req; obj_req = new_http_object_request(repo->url, request->obj->sha1); if (obj_req == NULL) { request->state = ABORTED; return; } slot = obj_req->slot; slot->callback_func = process_response; slot->callback_data = request; request->slot = slot; request->userData = obj_req; /* Try to get the request started, abort the request on error */ request->state = RUN_FETCH_LOOSE; if (!start_active_slot(slot)) { fprintf(stderr, "Unable to start GET request\n"); repo->can_update_info_refs = 0; release_http_object_request(obj_req); release_request(request); } } static void start_mkcol(struct transfer_request *request) { char *hex = sha1_to_hex(request->obj->sha1); struct active_request_slot *slot; request->url = get_remote_object_url(repo->url, hex, 1); slot = get_active_slot(); slot->callback_func = process_response; slot->callback_data = request; curl_setup_http_get(slot->curl, request->url, DAV_MKCOL); curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr); if (start_active_slot(slot)) { request->slot = slot; request->state = RUN_MKCOL; } else { request->state = ABORTED; free(request->url); request->url = NULL; } } #endif static void start_fetch_packed(struct transfer_request *request) { struct packed_git *target; struct transfer_request *check_request = request_queue_head; struct http_pack_request *preq; target = find_sha1_pack(request->obj->sha1, repo->packs); if (!target) { fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1)); repo->can_update_info_refs = 0; release_request(request); return; } fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1)); fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1)); preq = new_http_pack_request(target, repo->url); if (preq == NULL) { release_http_pack_request(preq); repo->can_update_info_refs = 0; return; } preq->lst = &repo->packs; /* Make sure there isn't another open request for this pack */ while (check_request) { if (check_request->state == RUN_FETCH_PACKED && !strcmp(check_request->url, preq->url)) { release_http_pack_request(preq); release_request(request); return; } check_request = check_request->next; } preq->slot->callback_func = process_response; preq->slot->callback_data = request; request->slot = preq->slot; request->userData = preq; /* Try to get the request started, abort the request on error */ request->state = RUN_FETCH_PACKED; if (!start_active_slot(preq->slot)) { fprintf(stderr, "Unable to start GET request\n"); release_http_pack_request(preq); repo->can_update_info_refs = 0; release_request(request); } } static void start_put(struct transfer_request *request) { char *hex = sha1_to_hex(request->obj->sha1); struct active_request_slot *slot; struct strbuf buf = STRBUF_INIT; enum object_type type; char hdr[50]; void *unpacked; unsigned long len; int hdrlen; ssize_t size; git_zstream stream; unpacked = read_sha1_file(request->obj->sha1, &type, &len); hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1; /* Set it up */ memset(&stream, 0, sizeof(stream)); git_deflate_init(&stream, zlib_compression_level); size = git_deflate_bound(&stream, len + hdrlen); strbuf_init(&request->buffer.buf, size); request->buffer.posn = 0; /* Compress it */ stream.next_out = (unsigned char *)request->buffer.buf.buf; stream.avail_out = size; /* First header.. */ stream.next_in = (void *)hdr; stream.avail_in = hdrlen; while (git_deflate(&stream, 0) == Z_OK) ; /* nothing */ /* Then the data itself.. */ stream.next_in = unpacked; stream.avail_in = len; while (git_deflate(&stream, Z_FINISH) == Z_OK) ; /* nothing */ git_deflate_end(&stream); free(unpacked); request->buffer.buf.len = stream.total_out; strbuf_addstr(&buf, "Destination: "); append_remote_object_url(&buf, repo->url, hex, 0); request->dest = strbuf_detach(&buf, NULL); append_remote_object_url(&buf, repo->url, hex, 0); strbuf_add(&buf, request->lock->tmpfile_suffix, 41); request->url = strbuf_detach(&buf, NULL); slot = get_active_slot(); slot->callback_func = process_response; slot->callback_data = request; curl_setup_http(slot->curl, request->url, DAV_PUT, &request->buffer, fwrite_null); if (start_active_slot(slot)) { request->slot = slot; request->state = RUN_PUT; } else { request->state = ABORTED; free(request->url); request->url = NULL; } } static void start_move(struct transfer_request *request) { struct active_request_slot *slot; struct curl_slist *dav_headers = NULL; slot = get_active_slot(); slot->callback_func = process_response; slot->callback_data = request; curl_setup_http_get(slot->curl, request->url, DAV_MOVE); dav_headers = curl_slist_append(dav_headers, request->dest); dav_headers = curl_slist_append(dav_headers, "Overwrite: T"); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); if (start_active_slot(slot)) { request->slot = slot; request->state = RUN_MOVE; } else { request->state = ABORTED; free(request->url); request->url = NULL; } } static int refresh_lock(struct remote_lock *lock) { struct active_request_slot *slot; struct slot_results results; struct curl_slist *dav_headers; int rc = 0; lock->refreshing = 1; dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF | DAV_HEADER_TIMEOUT); slot = get_active_slot(); slot->results = &results; curl_setup_http_get(slot->curl, lock->url, DAV_LOCK); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); if (start_active_slot(slot)) { run_active_slot(slot); if (results.curl_result != CURLE_OK) { fprintf(stderr, "LOCK HTTP error %ld\n", results.http_code); } else { lock->start_time = time(NULL); rc = 1; } } lock->refreshing = 0; curl_slist_free_all(dav_headers); return rc; } static void check_locks(void) { struct remote_lock *lock = repo->locks; time_t current_time = time(NULL); int time_remaining; while (lock) { time_remaining = lock->start_time + lock->timeout - current_time; if (!lock->refreshing && time_remaining < LOCK_REFRESH) { if (!refresh_lock(lock)) { fprintf(stderr, "Unable to refresh lock for %s\n", lock->url); aborted = 1; return; } } lock = lock->next; } } static void release_request(struct transfer_request *request) { struct transfer_request *entry = request_queue_head; if (request == request_queue_head) { request_queue_head = request->next; } else { while (entry->next != NULL && entry->next != request) entry = entry->next; if (entry->next == request) entry->next = entry->next->next; } free(request->url); free(request); } static void finish_request(struct transfer_request *request) { struct http_pack_request *preq; struct http_object_request *obj_req; request->curl_result = request->slot->curl_result; request->http_code = request->slot->http_code; request->slot = NULL; /* Keep locks active */ check_locks(); if (request->headers != NULL) curl_slist_free_all(request->headers); /* URL is reused for MOVE after PUT */ if (request->state != RUN_PUT) { free(request->url); request->url = NULL; } if (request->state == RUN_MKCOL) { if (request->curl_result == CURLE_OK || request->http_code == 405) { remote_dir_exists[request->obj->sha1[0]] = 1; start_put(request); } else { fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n", sha1_to_hex(request->obj->sha1), request->curl_result, request->http_code); request->state = ABORTED; aborted = 1; } } else if (request->state == RUN_PUT) { if (request->curl_result == CURLE_OK) { start_move(request); } else { fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n", sha1_to_hex(request->obj->sha1), request->curl_result, request->http_code); request->state = ABORTED; aborted = 1; } } else if (request->state == RUN_MOVE) { if (request->curl_result == CURLE_OK) { if (push_verbosely) fprintf(stderr, " sent %s\n", sha1_to_hex(request->obj->sha1)); request->obj->flags |= REMOTE; release_request(request); } else { fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n", sha1_to_hex(request->obj->sha1), request->curl_result, request->http_code); request->state = ABORTED; aborted = 1; } } else if (request->state == RUN_FETCH_LOOSE) { obj_req = (struct http_object_request *)request->userData; if (finish_http_object_request(obj_req) == 0) if (obj_req->rename == 0) request->obj->flags |= (LOCAL | REMOTE); /* Try fetching packed if necessary */ if (request->obj->flags & LOCAL) { release_http_object_request(obj_req); release_request(request); } else start_fetch_packed(request); } else if (request->state == RUN_FETCH_PACKED) { int fail = 1; if (request->curl_result != CURLE_OK) { fprintf(stderr, "Unable to get pack file %s\n%s", request->url, curl_errorstr); } else { preq = (struct http_pack_request *)request->userData; if (preq) { if (finish_http_pack_request(preq) == 0) fail = 0; release_http_pack_request(preq); } } if (fail) repo->can_update_info_refs = 0; release_request(request); } } #ifdef USE_CURL_MULTI static int is_running_queue; static int fill_active_slot(void *unused) { struct transfer_request *request; if (aborted || !is_running_queue) return 0; for (request = request_queue_head; request; request = request->next) { if (request->state == NEED_FETCH) { start_fetch_loose(request); return 1; } else if (pushing && request->state == NEED_PUSH) { if (remote_dir_exists[request->obj->sha1[0]] == 1) { start_put(request); } else { start_mkcol(request); } return 1; } } return 0; } #endif static void get_remote_object_list(unsigned char parent); static void add_fetch_request(struct object *obj) { struct transfer_request *request; check_locks(); /* * Don't fetch the object if it's known to exist locally * or is already in the request queue */ if (remote_dir_exists[obj->sha1[0]] == -1) get_remote_object_list(obj->sha1[0]); if (obj->flags & (LOCAL | FETCHING)) return; obj->flags |= FETCHING; request = xmalloc(sizeof(*request)); request->obj = obj; request->url = NULL; request->lock = NULL; request->headers = NULL; request->state = NEED_FETCH; request->next = request_queue_head; request_queue_head = request; #ifdef USE_CURL_MULTI fill_active_slots(); step_active_slots(); #endif } static int add_send_request(struct object *obj, struct remote_lock *lock) { struct transfer_request *request = request_queue_head; struct packed_git *target; /* Keep locks active */ check_locks(); /* * Don't push the object if it's known to exist on the remote * or is already in the request queue */ if (remote_dir_exists[obj->sha1[0]] == -1) get_remote_object_list(obj->sha1[0]); if (obj->flags & (REMOTE | PUSHING)) return 0; target = find_sha1_pack(obj->sha1, repo->packs); if (target) { obj->flags |= REMOTE; return 0; } obj->flags |= PUSHING; request = xmalloc(sizeof(*request)); request->obj = obj; request->url = NULL; request->lock = lock; request->headers = NULL; request->state = NEED_PUSH; request->next = request_queue_head; request_queue_head = request; #ifdef USE_CURL_MULTI fill_active_slots(); step_active_slots(); #endif return 1; } static int fetch_indices(void) { int ret; if (push_verbosely) fprintf(stderr, "Getting pack list\n"); switch (http_get_info_packs(repo->url, &repo->packs)) { case HTTP_OK: case HTTP_MISSING_TARGET: ret = 0; break; default: ret = -1; } return ret; } static void one_remote_object(const char *hex) { unsigned char sha1[20]; struct object *obj; if (get_sha1_hex(hex, sha1) != 0) return; obj = lookup_object(sha1); if (!obj) obj = parse_object(sha1); /* Ignore remote objects that don't exist locally */ if (!obj) return; obj->flags |= REMOTE; if (!object_list_contains(objects, obj)) object_list_insert(obj, &objects); } static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed) { int *lock_flags = (int *)ctx->userData; if (tag_closed) { if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) { if ((*lock_flags & DAV_PROP_LOCKEX) && (*lock_flags & DAV_PROP_LOCKWR)) { *lock_flags |= DAV_LOCK_OK; } *lock_flags &= DAV_LOCK_OK; } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) { *lock_flags |= DAV_PROP_LOCKWR; } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) { *lock_flags |= DAV_PROP_LOCKEX; } } } static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed) { struct remote_lock *lock = (struct remote_lock *)ctx->userData; git_SHA_CTX sha_ctx; unsigned char lock_token_sha1[20]; if (tag_closed && ctx->cdata) { if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) { lock->owner = xmalloc(strlen(ctx->cdata) + 1); strcpy(lock->owner, ctx->cdata); } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) { if (!prefixcmp(ctx->cdata, "Second-")) lock->timeout = strtol(ctx->cdata + 7, NULL, 10); } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) { lock->token = xmalloc(strlen(ctx->cdata) + 1); strcpy(lock->token, ctx->cdata); git_SHA1_Init(&sha_ctx); git_SHA1_Update(&sha_ctx, lock->token, strlen(lock->token)); git_SHA1_Final(lock_token_sha1, &sha_ctx); lock->tmpfile_suffix[0] = '_'; memcpy(lock->tmpfile_suffix + 1, sha1_to_hex(lock_token_sha1), 40); } } } static void one_remote_ref(const char *refname); static void xml_start_tag(void *userData, const char *name, const char **atts) { struct xml_ctx *ctx = (struct xml_ctx *)userData; const char *c = strchr(name, ':'); int new_len; if (c == NULL) c = name; else c++; new_len = strlen(ctx->name) + strlen(c) + 2; if (new_len > ctx->len) { ctx->name = xrealloc(ctx->name, new_len); ctx->len = new_len; } strcat(ctx->name, "."); strcat(ctx->name, c); free(ctx->cdata); ctx->cdata = NULL; ctx->userFunc(ctx, 0); } static void xml_end_tag(void *userData, const char *name) { struct xml_ctx *ctx = (struct xml_ctx *)userData; const char *c = strchr(name, ':'); char *ep; ctx->userFunc(ctx, 1); if (c == NULL) c = name; else c++; ep = ctx->name + strlen(ctx->name) - strlen(c) - 1; *ep = 0; } static void xml_cdata(void *userData, const XML_Char *s, int len) { struct xml_ctx *ctx = (struct xml_ctx *)userData; free(ctx->cdata); ctx->cdata = xmemdupz(s, len); } static struct remote_lock *lock_remote(const char *path, long timeout) { struct active_request_slot *slot; struct slot_results results; struct buffer out_buffer = { STRBUF_INIT, 0 }; struct strbuf in_buffer = STRBUF_INIT; char *url; char *ep; char timeout_header[25]; struct remote_lock *lock = NULL; struct curl_slist *dav_headers = NULL; struct xml_ctx ctx; char *escaped; url = xmalloc(strlen(repo->url) + strlen(path) + 1); sprintf(url, "%s%s", repo->url, path); /* Make sure leading directories exist for the remote ref */ ep = strchr(url + strlen(repo->url) + 1, '/'); while (ep) { char saved_character = ep[1]; ep[1] = '\0'; slot = get_active_slot(); slot->results = &results; curl_setup_http_get(slot->curl, url, DAV_MKCOL); if (start_active_slot(slot)) { run_active_slot(slot); if (results.curl_result != CURLE_OK && results.http_code != 405) { fprintf(stderr, "Unable to create branch path %s\n", url); free(url); return NULL; } } else { fprintf(stderr, "Unable to start MKCOL request\n"); free(url); return NULL; } ep[1] = saved_character; ep = strchr(ep + 1, '/'); } escaped = xml_entities(git_default_email); strbuf_addf(&out_buffer.buf, LOCK_REQUEST, escaped); free(escaped); sprintf(timeout_header, "Timeout: Second-%ld", timeout); dav_headers = curl_slist_append(dav_headers, timeout_header); dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml"); slot = get_active_slot(); slot->results = &results; curl_setup_http(slot->curl, url, DAV_LOCK, &out_buffer, fwrite_buffer); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer); lock = xcalloc(1, sizeof(*lock)); lock->timeout = -1; if (start_active_slot(slot)) { run_active_slot(slot); if (results.curl_result == CURLE_OK) { XML_Parser parser = XML_ParserCreate(NULL); enum XML_Status result; ctx.name = xcalloc(10, 1); ctx.len = 0; ctx.cdata = NULL; ctx.userFunc = handle_new_lock_ctx; ctx.userData = lock; XML_SetUserData(parser, &ctx); XML_SetElementHandler(parser, xml_start_tag, xml_end_tag); XML_SetCharacterDataHandler(parser, xml_cdata); result = XML_Parse(parser, in_buffer.buf, in_buffer.len, 1); free(ctx.name); if (result != XML_STATUS_OK) { fprintf(stderr, "XML error: %s\n", XML_ErrorString( XML_GetErrorCode(parser))); lock->timeout = -1; } XML_ParserFree(parser); } } else { fprintf(stderr, "Unable to start LOCK request\n"); } curl_slist_free_all(dav_headers); strbuf_release(&out_buffer.buf); strbuf_release(&in_buffer); if (lock->token == NULL || lock->timeout <= 0) { free(lock->token); free(lock->owner); free(url); free(lock); lock = NULL; } else { lock->url = url; lock->start_time = time(NULL); lock->next = repo->locks; repo->locks = lock; } return lock; } static int unlock_remote(struct remote_lock *lock) { struct active_request_slot *slot; struct slot_results results; struct remote_lock *prev = repo->locks; struct curl_slist *dav_headers; int rc = 0; dav_headers = get_dav_token_headers(lock, DAV_HEADER_LOCK); slot = get_active_slot(); slot->results = &results; curl_setup_http_get(slot->curl, lock->url, DAV_UNLOCK); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); if (start_active_slot(slot)) { run_active_slot(slot); if (results.curl_result == CURLE_OK) rc = 1; else fprintf(stderr, "UNLOCK HTTP error %ld\n", results.http_code); } else { fprintf(stderr, "Unable to start UNLOCK request\n"); } curl_slist_free_all(dav_headers); if (repo->locks == lock) { repo->locks = lock->next; } else { while (prev && prev->next != lock) prev = prev->next; if (prev) prev->next = prev->next->next; } free(lock->owner); free(lock->url); free(lock->token); free(lock); return rc; } static void remove_locks(void) { struct remote_lock *lock = repo->locks; fprintf(stderr, "Removing remote locks...\n"); while (lock) { struct remote_lock *next = lock->next; unlock_remote(lock); lock = next; } } static void remove_locks_on_signal(int signo) { remove_locks(); sigchain_pop(signo); raise(signo); } static void remote_ls(const char *path, int flags, void (*userFunc)(struct remote_ls_ctx *ls), void *userData); static void process_ls_object(struct remote_ls_ctx *ls) { unsigned int *parent = (unsigned int *)ls->userData; char *path = ls->dentry_name; char *obj_hex; if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) { remote_dir_exists[*parent] = 1; return; } if (strlen(path) != 49) return; path += 8; obj_hex = xmalloc(strlen(path)); /* NB: path is not null-terminated, can not use strlcpy here */ memcpy(obj_hex, path, 2); strcpy(obj_hex + 2, path + 3); one_remote_object(obj_hex); free(obj_hex); } static void process_ls_ref(struct remote_ls_ctx *ls) { if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) { fprintf(stderr, " %s\n", ls->dentry_name); return; } if (!(ls->dentry_flags & IS_DIR)) one_remote_ref(ls->dentry_name); } static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed) { struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData; if (tag_closed) { if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) { if (ls->dentry_flags & IS_DIR) { /* ensure collection names end with slash */ str_end_url_with_slash(ls->dentry_name, &ls->dentry_name); if (ls->flags & PROCESS_DIRS) { ls->userFunc(ls); } if (strcmp(ls->dentry_name, ls->path) && ls->flags & RECURSIVE) { remote_ls(ls->dentry_name, ls->flags, ls->userFunc, ls->userData); } } else if (ls->flags & PROCESS_FILES) { ls->userFunc(ls); } } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) { char *path = ctx->cdata; if (*ctx->cdata == 'h') { path = strstr(path, "//"); if (path) { path = strchr(path+2, '/'); } } if (path) { const char *url = repo->url; if (repo->path) url = repo->path; if (strncmp(path, url, repo->path_len)) error("Parsed path '%s' does not match url: '%s'\n", path, url); else { path += repo->path_len; ls->dentry_name = xstrdup(path); } } } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) { ls->dentry_flags |= IS_DIR; } } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) { free(ls->dentry_name); ls->dentry_name = NULL; ls->dentry_flags = 0; } } /* * NEEDSWORK: remote_ls() ignores info/refs on the remote side. But it * should _only_ heed the information from that file, instead of trying to * determine the refs from the remote file system (badly: it does not even * know about packed-refs). */ static void remote_ls(const char *path, int flags, void (*userFunc)(struct remote_ls_ctx *ls), void *userData) { char *url = xmalloc(strlen(repo->url) + strlen(path) + 1); struct active_request_slot *slot; struct slot_results results; struct strbuf in_buffer = STRBUF_INIT; struct buffer out_buffer = { STRBUF_INIT, 0 }; struct curl_slist *dav_headers = NULL; struct xml_ctx ctx; struct remote_ls_ctx ls; ls.flags = flags; ls.path = xstrdup(path); ls.dentry_name = NULL; ls.dentry_flags = 0; ls.userData = userData; ls.userFunc = userFunc; sprintf(url, "%s%s", repo->url, path); strbuf_addf(&out_buffer.buf, PROPFIND_ALL_REQUEST); dav_headers = curl_slist_append(dav_headers, "Depth: 1"); dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml"); slot = get_active_slot(); slot->results = &results; curl_setup_http(slot->curl, url, DAV_PROPFIND, &out_buffer, fwrite_buffer); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer); if (start_active_slot(slot)) { run_active_slot(slot); if (results.curl_result == CURLE_OK) { XML_Parser parser = XML_ParserCreate(NULL); enum XML_Status result; ctx.name = xcalloc(10, 1); ctx.len = 0; ctx.cdata = NULL; ctx.userFunc = handle_remote_ls_ctx; ctx.userData = &ls; XML_SetUserData(parser, &ctx); XML_SetElementHandler(parser, xml_start_tag, xml_end_tag); XML_SetCharacterDataHandler(parser, xml_cdata); result = XML_Parse(parser, in_buffer.buf, in_buffer.len, 1); free(ctx.name); if (result != XML_STATUS_OK) { fprintf(stderr, "XML error: %s\n", XML_ErrorString( XML_GetErrorCode(parser))); } XML_ParserFree(parser); } } else { fprintf(stderr, "Unable to start PROPFIND request\n"); } free(ls.path); free(url); strbuf_release(&out_buffer.buf); strbuf_release(&in_buffer); curl_slist_free_all(dav_headers); } static void get_remote_object_list(unsigned char parent) { char path[] = "objects/XX/"; static const char hex[] = "0123456789abcdef"; unsigned int val = parent; path[8] = hex[val >> 4]; path[9] = hex[val & 0xf]; remote_dir_exists[val] = 0; remote_ls(path, (PROCESS_FILES | PROCESS_DIRS), process_ls_object, &val); } static int locking_available(void) { struct active_request_slot *slot; struct slot_results results; struct strbuf in_buffer = STRBUF_INIT; struct buffer out_buffer = { STRBUF_INIT, 0 }; struct curl_slist *dav_headers = NULL; struct xml_ctx ctx; int lock_flags = 0; char *escaped; escaped = xml_entities(repo->url); strbuf_addf(&out_buffer.buf, PROPFIND_SUPPORTEDLOCK_REQUEST, escaped); free(escaped); dav_headers = curl_slist_append(dav_headers, "Depth: 0"); dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml"); slot = get_active_slot(); slot->results = &results; curl_setup_http(slot->curl, repo->url, DAV_PROPFIND, &out_buffer, fwrite_buffer); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer); if (start_active_slot(slot)) { run_active_slot(slot); if (results.curl_result == CURLE_OK) { XML_Parser parser = XML_ParserCreate(NULL); enum XML_Status result; ctx.name = xcalloc(10, 1); ctx.len = 0; ctx.cdata = NULL; ctx.userFunc = handle_lockprop_ctx; ctx.userData = &lock_flags; XML_SetUserData(parser, &ctx); XML_SetElementHandler(parser, xml_start_tag, xml_end_tag); result = XML_Parse(parser, in_buffer.buf, in_buffer.len, 1); free(ctx.name); if (result != XML_STATUS_OK) { fprintf(stderr, "XML error: %s\n", XML_ErrorString( XML_GetErrorCode(parser))); lock_flags = 0; } XML_ParserFree(parser); if (!lock_flags) error("no DAV locking support on %s", repo->url); } else { error("Cannot access URL %s, return code %d", repo->url, results.curl_result); lock_flags = 0; } } else { error("Unable to start PROPFIND request on %s", repo->url); } strbuf_release(&out_buffer.buf); strbuf_release(&in_buffer); curl_slist_free_all(dav_headers); return lock_flags; } static struct object_list **add_one_object(struct object *obj, struct object_list **p) { struct object_list *entry = xmalloc(sizeof(struct object_list)); entry->item = obj; entry->next = *p; *p = entry; return &entry->next; } static struct object_list **process_blob(struct blob *blob, struct object_list **p, struct name_path *path, const char *name) { struct object *obj = &blob->object; obj->flags |= LOCAL; if (obj->flags & (UNINTERESTING | SEEN)) return p; obj->flags |= SEEN; return add_one_object(obj, p); } static struct object_list **process_tree(struct tree *tree, struct object_list **p, struct name_path *path, const char *name) { struct object *obj = &tree->object; struct tree_desc desc; struct name_entry entry; struct name_path me; obj->flags |= LOCAL; if (obj->flags & (UNINTERESTING | SEEN)) return p; if (parse_tree(tree) < 0) die("bad tree object %s", sha1_to_hex(obj->sha1)); obj->flags |= SEEN; name = xstrdup(name); p = add_one_object(obj, p); me.up = path; me.elem = name; me.elem_len = strlen(name); init_tree_desc(&desc, tree->buffer, tree->size); while (tree_entry(&desc, &entry)) switch (object_type(entry.mode)) { case OBJ_TREE: p = process_tree(lookup_tree(entry.sha1), p, &me, name); break; case OBJ_BLOB: p = process_blob(lookup_blob(entry.sha1), p, &me, name); break; default: /* Subproject commit - not in this repository */ break; } free(tree->buffer); tree->buffer = NULL; return p; } static int get_delta(struct rev_info *revs, struct remote_lock *lock) { int i; struct commit *commit; struct object_list **p = &objects; int count = 0; while ((commit = get_revision(revs)) != NULL) { p = process_tree(commit->tree, p, NULL, ""); commit->object.flags |= LOCAL; if (!(commit->object.flags & UNINTERESTING)) count += add_send_request(&commit->object, lock); } for (i = 0; i < revs->pending.nr; i++) { struct object_array_entry *entry = revs->pending.objects + i; struct object *obj = entry->item; const char *name = entry->name; if (obj->flags & (UNINTERESTING | SEEN)) continue; if (obj->type == OBJ_TAG) { obj->flags |= SEEN; p = add_one_object(obj, p); continue; } if (obj->type == OBJ_TREE) { p = process_tree((struct tree *)obj, p, NULL, name); continue; } if (obj->type == OBJ_BLOB) { p = process_blob((struct blob *)obj, p, NULL, name); continue; } die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name); } while (objects) { if (!(objects->item->flags & UNINTERESTING)) count += add_send_request(objects->item, lock); objects = objects->next; } return count; } static int update_remote(unsigned char *sha1, struct remote_lock *lock) { struct active_request_slot *slot; struct slot_results results; struct buffer out_buffer = { STRBUF_INIT, 0 }; struct curl_slist *dav_headers; dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF); strbuf_addf(&out_buffer.buf, "%s\n", sha1_to_hex(sha1)); slot = get_active_slot(); slot->results = &results; curl_setup_http(slot->curl, lock->url, DAV_PUT, &out_buffer, fwrite_null); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); if (start_active_slot(slot)) { run_active_slot(slot); strbuf_release(&out_buffer.buf); if (results.curl_result != CURLE_OK) { fprintf(stderr, "PUT error: curl result=%d, HTTP code=%ld\n", results.curl_result, results.http_code); /* We should attempt recovery? */ return 0; } } else { strbuf_release(&out_buffer.buf); fprintf(stderr, "Unable to start PUT request\n"); return 0; } return 1; } static struct ref *remote_refs; static void one_remote_ref(const char *refname) { struct ref *ref; struct object *obj; ref = alloc_ref(refname); if (http_fetch_ref(repo->url, ref) != 0) { fprintf(stderr, "Unable to fetch ref %s from %s\n", refname, repo->url); free(ref); return; } /* * Fetch a copy of the object if it doesn't exist locally - it * may be required for updating server info later. */ if (repo->can_update_info_refs && !has_sha1_file(ref->old_sha1)) { obj = lookup_unknown_object(ref->old_sha1); if (obj) { fprintf(stderr, " fetch %s for %s\n", sha1_to_hex(ref->old_sha1), refname); add_fetch_request(obj); } } ref->next = remote_refs; remote_refs = ref; } static void get_dav_remote_heads(void) { remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL); } static void add_remote_info_ref(struct remote_ls_ctx *ls) { struct strbuf *buf = (struct strbuf *)ls->userData; struct object *o; int len; char *ref_info; struct ref *ref; ref = alloc_ref(ls->dentry_name); if (http_fetch_ref(repo->url, ref) != 0) { fprintf(stderr, "Unable to fetch ref %s from %s\n", ls->dentry_name, repo->url); aborted = 1; free(ref); return; } o = parse_object(ref->old_sha1); if (!o) { fprintf(stderr, "Unable to parse object %s for remote ref %s\n", sha1_to_hex(ref->old_sha1), ls->dentry_name); aborted = 1; free(ref); return; } len = strlen(ls->dentry_name) + 42; ref_info = xcalloc(len + 1, 1); sprintf(ref_info, "%s %s\n", sha1_to_hex(ref->old_sha1), ls->dentry_name); fwrite_buffer(ref_info, 1, len, buf); free(ref_info); if (o->type == OBJ_TAG) { o = deref_tag(o, ls->dentry_name, 0); if (o) { len = strlen(ls->dentry_name) + 45; ref_info = xcalloc(len + 1, 1); sprintf(ref_info, "%s %s^{}\n", sha1_to_hex(o->sha1), ls->dentry_name); fwrite_buffer(ref_info, 1, len, buf); free(ref_info); } } free(ref); } static void update_remote_info_refs(struct remote_lock *lock) { struct buffer buffer = { STRBUF_INIT, 0 }; struct active_request_slot *slot; struct slot_results results; struct curl_slist *dav_headers; remote_ls("refs/", (PROCESS_FILES | RECURSIVE), add_remote_info_ref, &buffer.buf); if (!aborted) { dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF); slot = get_active_slot(); slot->results = &results; curl_setup_http(slot->curl, lock->url, DAV_PUT, &buffer, fwrite_null); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); if (start_active_slot(slot)) { run_active_slot(slot); if (results.curl_result != CURLE_OK) { fprintf(stderr, "PUT error: curl result=%d, HTTP code=%ld\n", results.curl_result, results.http_code); } } } strbuf_release(&buffer.buf); } static int remote_exists(const char *path) { char *url = xmalloc(strlen(repo->url) + strlen(path) + 1); int ret; sprintf(url, "%s%s", repo->url, path); switch (http_get_strbuf(url, NULL, 0)) { case HTTP_OK: ret = 1; break; case HTTP_MISSING_TARGET: ret = 0; break; case HTTP_ERROR: http_error(url, HTTP_ERROR); default: ret = -1; } free(url); return ret; } static void fetch_symref(const char *path, char **symref, unsigned char *sha1) { char *url; struct strbuf buffer = STRBUF_INIT; url = xmalloc(strlen(repo->url) + strlen(path) + 1); sprintf(url, "%s%s", repo->url, path); if (http_get_strbuf(url, &buffer, 0) != HTTP_OK) die("Couldn't get %s for remote symref\n%s", url, curl_errorstr); free(url); free(*symref); *symref = NULL; hashclr(sha1); if (buffer.len == 0) return; /* If it's a symref, set the refname; otherwise try for a sha1 */ if (!prefixcmp((char *)buffer.buf, "ref: ")) { *symref = xmemdupz((char *)buffer.buf + 5, buffer.len - 6); } else { get_sha1_hex(buffer.buf, sha1); } strbuf_release(&buffer); } static int verify_merge_base(unsigned char *head_sha1, struct ref *remote) { struct commit *head = lookup_commit_or_die(head_sha1, "HEAD"); struct commit *branch = lookup_commit_or_die(remote->old_sha1, remote->name); struct commit_list *merge_bases = get_merge_bases(head, branch, 1); return (merge_bases && !merge_bases->next && merge_bases->item == branch); } static int delete_remote_branch(const char *pattern, int force) { struct ref *refs = remote_refs; struct ref *remote_ref = NULL; unsigned char head_sha1[20]; char *symref = NULL; int match; int patlen = strlen(pattern); int i; struct active_request_slot *slot; struct slot_results results; char *url; /* Find the remote branch(es) matching the specified branch name */ for (match = 0; refs; refs = refs->next) { char *name = refs->name; int namelen = strlen(name); if (namelen < patlen || memcmp(name + namelen - patlen, pattern, patlen)) continue; if (namelen != patlen && name[namelen - patlen - 1] != '/') continue; match++; remote_ref = refs; } if (match == 0) return error("No remote branch matches %s", pattern); if (match != 1) return error("More than one remote branch matches %s", pattern); /* * Remote HEAD must be a symref (not exactly foolproof; a remote * symlink to a symref will look like a symref) */ fetch_symref("HEAD", &symref, head_sha1); if (!symref) return error("Remote HEAD is not a symref"); /* Remote branch must not be the remote HEAD */ for (i = 0; symref && i < MAXDEPTH; i++) { if (!strcmp(remote_ref->name, symref)) return error("Remote branch %s is the current HEAD", remote_ref->name); fetch_symref(symref, &symref, head_sha1); } /* Run extra sanity checks if delete is not forced */ if (!force) { /* Remote HEAD must resolve to a known object */ if (symref) return error("Remote HEAD symrefs too deep"); if (is_null_sha1(head_sha1)) return error("Unable to resolve remote HEAD"); if (!has_sha1_file(head_sha1)) return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1)); /* Remote branch must resolve to a known object */ if (is_null_sha1(remote_ref->old_sha1)) return error("Unable to resolve remote branch %s", remote_ref->name); if (!has_sha1_file(remote_ref->old_sha1)) return error("Remote branch %s resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", remote_ref->name, sha1_to_hex(remote_ref->old_sha1)); /* Remote branch must be an ancestor of remote HEAD */ if (!verify_merge_base(head_sha1, remote_ref)) { return error("The branch '%s' is not an ancestor " "of your current HEAD.\n" "If you are sure you want to delete it," " run:\n\t'git http-push -D %s %s'", remote_ref->name, repo->url, pattern); } } /* Send delete request */ fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name); if (dry_run) return 0; url = xmalloc(strlen(repo->url) + strlen(remote_ref->name) + 1); sprintf(url, "%s%s", repo->url, remote_ref->name); slot = get_active_slot(); slot->results = &results; curl_setup_http_get(slot->curl, url, DAV_DELETE); if (start_active_slot(slot)) { run_active_slot(slot); free(url); if (results.curl_result != CURLE_OK) return error("DELETE request failed (%d/%ld)\n", results.curl_result, results.http_code); } else { free(url); return error("Unable to start DELETE request"); } return 0; } static void run_request_queue(void) { #ifdef USE_CURL_MULTI is_running_queue = 1; fill_active_slots(); add_fill_function(NULL, fill_active_slot); #endif do { finish_all_active_slots(); #ifdef USE_CURL_MULTI fill_active_slots(); #endif } while (request_queue_head && !aborted); #ifdef USE_CURL_MULTI is_running_queue = 0; #endif } int main(int argc, char **argv) { struct transfer_request *request; struct transfer_request *next_request; int nr_refspec = 0; char **refspec = NULL; struct remote_lock *ref_lock = NULL; struct remote_lock *info_ref_lock = NULL; struct rev_info revs; int delete_branch = 0; int force_delete = 0; int objects_to_send; int rc = 0; int i; int new_refs; struct ref *ref, *local_refs; git_extract_argv0_path(argv[0]); repo = xcalloc(sizeof(*repo), 1); argv++; for (i = 1; i < argc; i++, argv++) { char *arg = *argv; if (*arg == '-') { if (!strcmp(arg, "--all")) { push_all = MATCH_REFS_ALL; continue; } if (!strcmp(arg, "--force")) { force_all = 1; continue; } if (!strcmp(arg, "--dry-run")) { dry_run = 1; continue; } if (!strcmp(arg, "--helper-status")) { helper_status = 1; continue; } if (!strcmp(arg, "--verbose")) { push_verbosely = 1; http_is_verbose = 1; continue; } if (!strcmp(arg, "-d")) { delete_branch = 1; continue; } if (!strcmp(arg, "-D")) { delete_branch = 1; force_delete = 1; continue; } if (!strcmp(arg, "-h")) usage(http_push_usage); } if (!repo->url) { char *path = strstr(arg, "//"); str_end_url_with_slash(arg, &repo->url); repo->path_len = strlen(repo->url); if (path) { repo->path = strchr(path+2, '/'); if (repo->path) repo->path_len = strlen(repo->path); } continue; } refspec = argv; nr_refspec = argc - i; break; } #ifndef USE_CURL_MULTI die("git-push is not available for http/https repository when not compiled with USE_CURL_MULTI"); #endif if (!repo->url) usage(http_push_usage); if (delete_branch && nr_refspec != 1) die("You must specify only one branch name when deleting a remote branch"); setup_git_directory(); memset(remote_dir_exists, -1, 256); http_init(NULL, repo->url); #ifdef USE_CURL_MULTI is_running_queue = 0; #endif /* Verify DAV compliance/lock support */ if (!locking_available()) { rc = 1; goto cleanup; } sigchain_push_common(remove_locks_on_signal); /* Check whether the remote has server info files */ repo->can_update_info_refs = 0; repo->has_info_refs = remote_exists("info/refs"); repo->has_info_packs = remote_exists("objects/info/packs"); if (repo->has_info_refs) { info_ref_lock = lock_remote("info/refs", LOCK_TIME); if (info_ref_lock) repo->can_update_info_refs = 1; else { error("cannot lock existing info/refs"); rc = 1; goto cleanup; } } if (repo->has_info_packs) fetch_indices(); /* Get a list of all local and remote heads to validate refspecs */ local_refs = get_local_heads(); fprintf(stderr, "Fetching remote heads...\n"); get_dav_remote_heads(); run_request_queue(); /* Remove a remote branch if -d or -D was specified */ if (delete_branch) { if (delete_remote_branch(refspec[0], force_delete) == -1) { fprintf(stderr, "Unable to delete remote branch %s\n", refspec[0]); if (helper_status) printf("error %s cannot remove\n", refspec[0]); } goto cleanup; } /* match them up */ if (match_push_refs(local_refs, &remote_refs, nr_refspec, (const char **) refspec, push_all)) { rc = -1; goto cleanup; } if (!remote_refs) { fprintf(stderr, "No refs in common and none specified; doing nothing.\n"); if (helper_status) printf("error null no match\n"); rc = 0; goto cleanup; } new_refs = 0; for (ref = remote_refs; ref; ref = ref->next) { char old_hex[60], *new_hex; const char *commit_argv[5]; int commit_argc; char *new_sha1_hex, *old_sha1_hex; if (!ref->peer_ref) continue; if (is_null_sha1(ref->peer_ref->new_sha1)) { if (delete_remote_branch(ref->name, 1) == -1) { error("Could not remove %s", ref->name); if (helper_status) printf("error %s cannot remove\n", ref->name); rc = -4; } else if (helper_status) printf("ok %s\n", ref->name); new_refs++; continue; } if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) { if (push_verbosely) fprintf(stderr, "'%s': up-to-date\n", ref->name); if (helper_status) printf("ok %s up to date\n", ref->name); continue; } if (!force_all && !is_null_sha1(ref->old_sha1) && !ref->force) { if (!has_sha1_file(ref->old_sha1) || !ref_newer(ref->peer_ref->new_sha1, ref->old_sha1)) { /* * We do not have the remote ref, or * we know that the remote ref is not * an ancestor of what we are trying to * push. Either way this can be losing * commits at the remote end and likely * we were not up to date to begin with. */ error("remote '%s' is not an ancestor of\n" "local '%s'.\n" "Maybe you are not up-to-date and " "need to pull first?", ref->name, ref->peer_ref->name); if (helper_status) printf("error %s non-fast forward\n", ref->name); rc = -2; continue; } } hashcpy(ref->new_sha1, ref->peer_ref->new_sha1); new_refs++; strcpy(old_hex, sha1_to_hex(ref->old_sha1)); new_hex = sha1_to_hex(ref->new_sha1); fprintf(stderr, "updating '%s'", ref->name); if (strcmp(ref->name, ref->peer_ref->name)) fprintf(stderr, " using '%s'", ref->peer_ref->name); fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex); if (dry_run) { if (helper_status) printf("ok %s\n", ref->name); continue; } /* Lock remote branch ref */ ref_lock = lock_remote(ref->name, LOCK_TIME); if (ref_lock == NULL) { fprintf(stderr, "Unable to lock remote branch %s\n", ref->name); if (helper_status) printf("error %s lock error\n", ref->name); rc = 1; continue; } /* Set up revision info for this refspec */ commit_argc = 3; new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1)); old_sha1_hex = NULL; commit_argv[1] = "--objects"; commit_argv[2] = new_sha1_hex; if (!push_all && !is_null_sha1(ref->old_sha1)) { old_sha1_hex = xmalloc(42); sprintf(old_sha1_hex, "^%s", sha1_to_hex(ref->old_sha1)); commit_argv[3] = old_sha1_hex; commit_argc++; } commit_argv[commit_argc] = NULL; init_revisions(&revs, setup_git_directory()); setup_revisions(commit_argc, commit_argv, &revs, NULL); revs.edge_hint = 0; /* just in case */ free(new_sha1_hex); if (old_sha1_hex) { free(old_sha1_hex); commit_argv[1] = NULL; } /* Generate a list of objects that need to be pushed */ pushing = 0; if (prepare_revision_walk(&revs)) die("revision walk setup failed"); mark_edges_uninteresting(revs.commits, &revs, NULL); objects_to_send = get_delta(&revs, ref_lock); finish_all_active_slots(); /* Push missing objects to remote, this would be a convenient time to pack them first if appropriate. */ pushing = 1; if (objects_to_send) fprintf(stderr, " sending %d objects\n", objects_to_send); run_request_queue(); /* Update the remote branch if all went well */ if (aborted || !update_remote(ref->new_sha1, ref_lock)) rc = 1; if (!rc) fprintf(stderr, " done\n"); if (helper_status) printf("%s %s\n", !rc ? "ok" : "error", ref->name); unlock_remote(ref_lock); check_locks(); } /* Update remote server info if appropriate */ if (repo->has_info_refs && new_refs) { if (info_ref_lock && repo->can_update_info_refs) { fprintf(stderr, "Updating remote server info\n"); if (!dry_run) update_remote_info_refs(info_ref_lock); } else { fprintf(stderr, "Unable to update server info\n"); } } cleanup: if (info_ref_lock) unlock_remote(info_ref_lock); free(repo); http_cleanup(); request = request_queue_head; while (request != NULL) { next_request = request->next; release_request(request); request = next_request; } return rc; }