Merge early part of 'jc/combine' branch
[gitweb.git] / http-fetch.c
index ad59f1cce61d73fa832828aabb880f082debf94d..dc67218ae7caba09add888bc0da165d6c0c10930 100644 (file)
@@ -8,6 +8,7 @@
 #define RANGE_HEADER_SIZE 30
 
 static int got_alternates = -1;
+static int corrupt_object_found = 0;
 
 static struct curl_slist *no_pragma_header;
 
@@ -130,7 +131,7 @@ static void start_object_request(struct object_request *obj_req)
 
        if (obj_req->local < 0) {
                obj_req->state = ABORTED;
-               error("Couldn't create temporary file %s for %s: %s\n",
+               error("Couldn't create temporary file %s for %s: %s",
                      obj_req->tmpfile, obj_req->filename, strerror(errno));
                return;
        }
@@ -220,7 +221,6 @@ static void start_object_request(struct object_request *obj_req)
                free(obj_req->url);
                return;
        }
-       
 }
 
 static void finish_object_request(struct object_request *obj_req)
@@ -267,7 +267,8 @@ static void process_object_response(void *callback_data)
        obj_req->state = COMPLETE;
 
        /* Use alternates if necessary */
-       if (obj_req->http_code == 404) {
+       if (obj_req->http_code == 404 ||
+           obj_req->curl_result == CURLE_FILE_COULDNT_READ_FILE) {
                fetch_alternates(alt->base);
                if (obj_req->repo->next != NULL) {
                        obj_req->repo =
@@ -311,7 +312,7 @@ void fill_active_slots(void)
        while (active_requests < max_requests && obj_req != NULL) {
                if (obj_req->state == WAITING) {
                        if (has_sha1_file(obj_req->sha1))
-                               release_object_request(obj_req);
+                               obj_req->state = COMPLETE;
                        else
                                start_object_request(obj_req);
                        curl_multi_perform(curlm, &num_transfers);
@@ -325,7 +326,7 @@ void fill_active_slots(void)
                        slot->curl = NULL;
                }
                slot = slot->next;
-       }                               
+       }
 }
 #endif
 
@@ -374,16 +375,17 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
 
        FILE *indexfile;
        struct active_request_slot *slot;
+       struct slot_results results;
 
        if (has_pack_index(sha1))
                return 0;
 
        if (get_verbosely)
                fprintf(stderr, "Getting index for pack %s\n", hex);
-       
+
        url = xmalloc(strlen(repo->base) + 64);
        sprintf(url, "%s/objects/pack/pack-%s.idx", repo->base, hex);
-       
+
        filename = sha1_pack_index_name(sha1);
        snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
        indexfile = fopen(tmpfile, "a");
@@ -392,6 +394,7 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
                             filename);
 
        slot = get_active_slot();
+       slot->results = &results;
        curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile);
        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
        curl_easy_setopt(slot->curl, CURLOPT_URL, url);
@@ -413,7 +416,7 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
 
        if (start_active_slot(slot)) {
                run_active_slot(slot);
-               if (slot->curl_result != CURLE_OK) {
+               if (results.curl_result != CURLE_OK) {
                        fclose(indexfile);
                        return error("Unable to get pack index %s\n%s", url,
                                     curl_errorstr);
@@ -466,16 +469,19 @@ static void process_alternates_response(void *callback_data)
                                         alt_req->url);
                        active_requests++;
                        slot->in_use = 1;
-                       if (start_active_slot(slot)) {
-                               return;
-                       } else {
+                       if (slot->finished != NULL)
+                               (*slot->finished) = 0;
+                       if (!start_active_slot(slot)) {
                                got_alternates = -1;
                                slot->in_use = 0;
-                               return;
+                               if (slot->finished != NULL)
+                                       (*slot->finished) = 1;
                        }
+                       return;
                }
        } else if (slot->curl_result != CURLE_OK) {
-               if (slot->http_code != 404) {
+               if (slot->http_code != 404 &&
+                   slot->curl_result != CURLE_FILE_COULDNT_READ_FILE) {
                        got_alternates = -1;
                        return;
                }
@@ -500,7 +506,7 @@ static void process_alternates_response(void *callback_data)
                        } else if (!memcmp(data + i, "../", 3)) {
                                i += 3;
                                serverlen = strlen(base);
-                               while (i + 2 < posn && 
+                               while (i + 2 < posn &&
                                       !memcmp(data + i, "../", 3)) {
                                        do {
                                                serverlen--;
@@ -509,7 +515,7 @@ static void process_alternates_response(void *callback_data)
                                        i += 3;
                                }
                                // If the server got removed, give up.
-                               okay = strchr(base, ':') - base + 3 < 
+                               okay = strchr(base, ':') - base + 3 <
                                        serverlen;
                        } else if (alt_req->http_specific) {
                                char *colon = strchr(data + i, ':');
@@ -527,7 +533,7 @@ static void process_alternates_response(void *callback_data)
                                        posn - i - 7);
                                target[serverlen + posn - i - 7] = '\0';
                                if (get_verbosely)
-                                       fprintf(stderr, 
+                                       fprintf(stderr,
                                                "Also look at %s\n", target);
                                newalt = xmalloc(sizeof(*newalt));
                                newalt->next = NULL;
@@ -551,7 +557,7 @@ static void fetch_alternates(char *base)
        char *url;
        char *data;
        struct active_request_slot *slot;
-       static struct alternates_request alt_req;
+       struct alternates_request alt_req;
 
        /* If another request has already started fetching alternates,
           wait for them to arrive and return to processing this request's
@@ -576,7 +582,7 @@ static void fetch_alternates(char *base)
 
        if (get_verbosely)
                fprintf(stderr, "Getting alternates list for %s\n", base);
-       
+
        url = xmalloc(strlen(base) + 31);
        sprintf(url, "%s/objects/info/http-alternates", base);
 
@@ -614,6 +620,7 @@ static int fetch_indices(struct alt_base *repo)
        int i = 0;
 
        struct active_request_slot *slot;
+       struct slot_results results;
 
        if (repo->got_indices)
                return 0;
@@ -625,19 +632,21 @@ static int fetch_indices(struct alt_base *repo)
 
        if (get_verbosely)
                fprintf(stderr, "Getting pack list for %s\n", repo->base);
-       
+
        url = xmalloc(strlen(repo->base) + 21);
        sprintf(url, "%s/objects/info/packs", repo->base);
 
        slot = get_active_slot();
+       slot->results = &results;
        curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
        curl_easy_setopt(slot->curl, CURLOPT_URL, url);
        curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
        if (start_active_slot(slot)) {
                run_active_slot(slot);
-               if (slot->curl_result != CURLE_OK) {
-                       if (slot->http_code == 404) {
+               if (results.curl_result != CURLE_OK) {
+                       if (results.http_code == 404 ||
+                           results.curl_result == CURLE_FILE_COULDNT_READ_FILE) {
                                repo->got_indices = 1;
                                free(buffer.buffer);
                                return 0;
@@ -658,7 +667,7 @@ static int fetch_indices(struct alt_base *repo)
                switch (data[i]) {
                case 'P':
                        i++;
-                       if (i + 52 < buffer.posn &&
+                       if (i + 52 <= buffer.posn &&
                            !strncmp(data + i, " pack-", 6) &&
                            !strncmp(data + i + 46, ".pack\n", 6)) {
                                get_sha1_hex(data + i + 6, sha1);
@@ -667,7 +676,7 @@ static int fetch_indices(struct alt_base *repo)
                                break;
                        }
                default:
-                       while (data[i] != '\n')
+                       while (i < buffer.posn && data[i] != '\n')
                                i++;
                }
                i++;
@@ -692,6 +701,7 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
        struct curl_slist *range_header = NULL;
 
        struct active_request_slot *slot;
+       struct slot_results results;
 
        if (fetch_indices(repo))
                return -1;
@@ -718,6 +728,7 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
                             filename);
 
        slot = get_active_slot();
+       slot->results = &results;
        curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
        curl_easy_setopt(slot->curl, CURLOPT_URL, url);
@@ -739,7 +750,7 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
 
        if (start_active_slot(slot)) {
                run_active_slot(slot);
-               if (slot->curl_result != CURLE_OK) {
+               if (results.curl_result != CURLE_OK) {
                        fclose(packfile);
                        return error("Unable to get pack file %s\n%s", url,
                                     curl_errorstr);
@@ -767,6 +778,20 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
        return 0;
 }
 
+static void abort_object_request(struct object_request *obj_req)
+{
+       if (obj_req->local >= 0) {
+               close(obj_req->local);
+               obj_req->local = -1;
+       }
+       unlink(obj_req->tmpfile);
+       if (obj_req->slot) {
+               release_active_slot(obj_req->slot);
+               obj_req->slot = NULL;
+       }
+       release_object_request(obj_req);
+}
+
 static int fetch_object(struct alt_base *repo, unsigned char *sha1)
 {
        char *hex = sha1_to_hex(sha1);
@@ -779,7 +804,7 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
                return error("Couldn't find request for %s in the queue", hex);
 
        if (has_sha1_file(obj_req->sha1)) {
-               release_object_request(obj_req);
+               abort_object_request(obj_req);
                return 0;
        }
 
@@ -802,20 +827,21 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
                ret = error("Request for %s aborted", hex);
        } else if (obj_req->curl_result != CURLE_OK &&
                   obj_req->http_code != 416) {
-               if (obj_req->http_code == 404)
+               if (obj_req->http_code == 404 ||
+                   obj_req->curl_result == CURLE_FILE_COULDNT_READ_FILE)
                        ret = -1; /* Be silent, it is probably in a pack. */
                else
                        ret = error("%s (curl_result = %d, http_code = %ld, sha1 = %s)",
                                    obj_req->errorstr, obj_req->curl_result,
                                    obj_req->http_code, hex);
        } else if (obj_req->zret != Z_STREAM_END) {
-               ret = error("File %s (%s) corrupt\n", hex, obj_req->url);
+               corrupt_object_found++;
+               ret = error("File %s (%s) corrupt", hex, obj_req->url);
        } else if (memcmp(obj_req->sha1, obj_req->real_sha1, 20)) {
-               ret = error("File %s has bad hash\n", hex);
+               ret = error("File %s has bad hash", hex);
        } else if (obj_req->rename < 0) {
-               ret = error("unable to write sha1 filename %s: %s",
-                           obj_req->filename,
-                           strerror(obj_req->rename));
+               ret = error("unable to write sha1 filename %s",
+                           obj_req->filename);
        }
 
        release_object_request(obj_req);
@@ -834,7 +860,7 @@ int fetch(unsigned char *sha1)
                fetch_alternates(alt->base);
                altbase = altbase->next;
        }
-       return error("Unable to find %s under %s\n", sha1_to_hex(sha1), 
+       return error("Unable to find %s under %s", sha1_to_hex(sha1),
                     alt->base);
 }
 
@@ -890,20 +916,22 @@ int fetch_ref(char *ref, unsigned char *sha1)
         struct buffer buffer;
        char *base = alt->base;
        struct active_request_slot *slot;
+       struct slot_results results;
         buffer.size = 41;
         buffer.posn = 0;
         buffer.buffer = hex;
         hex[41] = '\0';
-        
+
        url = quote_ref_url(base, ref);
        slot = get_active_slot();
+       slot->results = &results;
        curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
        curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
        curl_easy_setopt(slot->curl, CURLOPT_URL, url);
        if (start_active_slot(slot)) {
                run_active_slot(slot);
-               if (slot->curl_result != CURLE_OK)
+               if (results.curl_result != CURLE_OK)
                        return error("Couldn't get %s for %s\n%s",
                                     url, ref, curl_errorstr);
        } else {
@@ -967,5 +995,11 @@ int main(int argc, char **argv)
 
        http_cleanup();
 
+       if (corrupt_object_found) {
+               fprintf(stderr,
+"Some loose object were found to be corrupt, but they might be just\n"
+"a false '404 Not Found' error message sent with incorrect HTTP\n"
+"status code.  Suggest running git fsck-objects.\n");
+       }
        return rc;
 }