#include "cache.h"
-#include "commit.h"
-#include "pack.h"
-#include "fetch.h"
-#include "http.h"
-
-#define PREV_BUF_SIZE 4096
-#define RANGE_HEADER_SIZE 30
-
-static int commits_on_stdin;
-
-static int got_alternates = -1;
-static int corrupt_object_found;
-
-static struct curl_slist *no_pragma_header;
-
-struct alt_base
-{
- char *base;
- int got_indices;
- struct packed_git *packs;
- struct alt_base *next;
-};
-
-static struct alt_base *alt;
-
-enum object_request_state {
- WAITING,
- ABORTED,
- ACTIVE,
- COMPLETE,
-};
-
-struct object_request
-{
- unsigned char sha1[20];
- struct alt_base *repo;
- char *url;
- char filename[PATH_MAX];
- char tmpfile[PATH_MAX];
- int local;
- enum object_request_state state;
- CURLcode curl_result;
- char errorstr[CURL_ERROR_SIZE];
- long http_code;
- unsigned char real_sha1[20];
- SHA_CTX c;
- z_stream stream;
- int zret;
- int rename;
- struct active_request_slot *slot;
- struct object_request *next;
-};
-
-struct alternates_request {
- const char *base;
- char *url;
- struct buffer *buffer;
- struct active_request_slot *slot;
- int http_specific;
-};
-
-static struct object_request *object_queue_head;
-
-static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
- void *data)
-{
- unsigned char expn[4096];
- size_t size = eltsize * nmemb;
- int posn = 0;
- struct object_request *obj_req = (struct object_request *)data;
- do {
- ssize_t retval = xwrite(obj_req->local,
- (char *) ptr + posn, size - posn);
- if (retval < 0)
- return posn;
- posn += retval;
- } while (posn < size);
-
- obj_req->stream.avail_in = size;
- obj_req->stream.next_in = ptr;
- do {
- obj_req->stream.next_out = expn;
- obj_req->stream.avail_out = sizeof(expn);
- obj_req->zret = inflate(&obj_req->stream, Z_SYNC_FLUSH);
- SHA1_Update(&obj_req->c, expn,
- sizeof(expn) - obj_req->stream.avail_out);
- } while (obj_req->stream.avail_in && obj_req->zret == Z_OK);
- data_received++;
- return size;
-}
-
-static int missing__target(int code, int result)
-{
- return /* file:// URL -- do we ever use one??? */
- (result == CURLE_FILE_COULDNT_READ_FILE) ||
- /* http:// and https:// URL */
- (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) ||
- /* ftp:// URL */
- (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
- ;
-}
-
-#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
-
-static void fetch_alternates(const char *base);
-
-static void process_object_response(void *callback_data);
-
-static void start_object_request(struct object_request *obj_req)
-{
- char *hex = sha1_to_hex(obj_req->sha1);
- char prevfile[PATH_MAX];
- char *url;
- char *posn;
- int prevlocal;
- unsigned char prev_buf[PREV_BUF_SIZE];
- ssize_t prev_read = 0;
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
- struct curl_slist *range_header = NULL;
- struct active_request_slot *slot;
-
- snprintf(prevfile, sizeof(prevfile), "%s.prev", obj_req->filename);
- unlink(prevfile);
- rename(obj_req->tmpfile, prevfile);
- unlink(obj_req->tmpfile);
-
- if (obj_req->local != -1)
- error("fd leakage in start: %d", obj_req->local);
- obj_req->local = open(obj_req->tmpfile,
- O_WRONLY | O_CREAT | O_EXCL, 0666);
- /* This could have failed due to the "lazy directory creation";
- * try to mkdir the last path component.
- */
- if (obj_req->local < 0 && errno == ENOENT) {
- char *dir = strrchr(obj_req->tmpfile, '/');
- if (dir) {
- *dir = 0;
- mkdir(obj_req->tmpfile, 0777);
- *dir = '/';
- }
- obj_req->local = open(obj_req->tmpfile,
- O_WRONLY | O_CREAT | O_EXCL, 0666);
- }
-
- if (obj_req->local < 0) {
- obj_req->state = ABORTED;
- error("Couldn't create temporary file %s for %s: %s",
- obj_req->tmpfile, obj_req->filename, strerror(errno));
- return;
- }
-
- memset(&obj_req->stream, 0, sizeof(obj_req->stream));
-
- inflateInit(&obj_req->stream);
-
- SHA1_Init(&obj_req->c);
-
- url = xmalloc(strlen(obj_req->repo->base) + 51);
- obj_req->url = xmalloc(strlen(obj_req->repo->base) + 51);
- strcpy(url, obj_req->repo->base);
- posn = url + strlen(obj_req->repo->base);
- strcpy(posn, "/objects/");
- posn += 9;
- memcpy(posn, hex, 2);
- posn += 2;
- *(posn++) = '/';
- strcpy(posn, hex + 2);
- strcpy(obj_req->url, url);
-
- /* If a previous temp file is present, process what was already
- fetched. */
- prevlocal = open(prevfile, O_RDONLY);
- if (prevlocal != -1) {
- do {
- prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
- if (prev_read>0) {
- if (fwrite_sha1_file(prev_buf,
- 1,
- prev_read,
- obj_req) == prev_read) {
- prev_posn += prev_read;
- } else {
- prev_read = -1;
- }
- }
- } while (prev_read > 0);
- close(prevlocal);
- }
- unlink(prevfile);
-
- /* Reset inflate/SHA1 if there was an error reading the previous temp
- file; also rewind to the beginning of the local file. */
- if (prev_read == -1) {
- memset(&obj_req->stream, 0, sizeof(obj_req->stream));
- inflateInit(&obj_req->stream);
- SHA1_Init(&obj_req->c);
- if (prev_posn>0) {
- prev_posn = 0;
- lseek(obj_req->local, 0, SEEK_SET);
- ftruncate(obj_req->local, 0);
- }
- }
-
- slot = get_active_slot();
- slot->callback_func = process_object_response;
- slot->callback_data = obj_req;
- obj_req->slot = slot;
-
- curl_easy_setopt(slot->curl, CURLOPT_FILE, obj_req);
- curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
- curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, obj_req->errorstr);
- curl_easy_setopt(slot->curl, CURLOPT_URL, url);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
-
- /* If we have successfully processed data from a previous fetch
- attempt, only fetch the data we don't already have. */
- if (prev_posn>0) {
- if (get_verbosely)
- fprintf(stderr,
- "Resuming fetch of object %s at byte %ld\n",
- hex, prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- range_header = curl_slist_append(range_header, range);
- curl_easy_setopt(slot->curl,
- CURLOPT_HTTPHEADER, range_header);
- }
-
- /* Try to get the request started, abort the request on error */
- obj_req->state = ACTIVE;
- if (!start_active_slot(slot)) {
- obj_req->state = ABORTED;
- obj_req->slot = NULL;
- close(obj_req->local); obj_req->local = -1;
- free(obj_req->url);
- return;
- }
-}
-
-static void finish_object_request(struct object_request *obj_req)
-{
- struct stat st;
-
- fchmod(obj_req->local, 0444);
- close(obj_req->local); obj_req->local = -1;
-
- if (obj_req->http_code == 416) {
- fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n");
- } else if (obj_req->curl_result != CURLE_OK) {
- if (stat(obj_req->tmpfile, &st) == 0)
- if (st.st_size == 0)
- unlink(obj_req->tmpfile);
- return;
- }
-
- inflateEnd(&obj_req->stream);
- SHA1_Final(obj_req->real_sha1, &obj_req->c);
- if (obj_req->zret != Z_STREAM_END) {
- unlink(obj_req->tmpfile);
- return;
- }
- if (hashcmp(obj_req->sha1, obj_req->real_sha1)) {
- unlink(obj_req->tmpfile);
- return;
- }
- obj_req->rename =
- move_temp_to_file(obj_req->tmpfile, obj_req->filename);
-
- if (obj_req->rename == 0)
- pull_say("got %s\n", sha1_to_hex(obj_req->sha1));
-}
-
-static void process_object_response(void *callback_data)
-{
- struct object_request *obj_req =
- (struct object_request *)callback_data;
-
- obj_req->curl_result = obj_req->slot->curl_result;
- obj_req->http_code = obj_req->slot->http_code;
- obj_req->slot = NULL;
- obj_req->state = COMPLETE;
-
- /* Use alternates if necessary */
- if (missing_target(obj_req)) {
- fetch_alternates(alt->base);
- if (obj_req->repo->next != NULL) {
- obj_req->repo =
- obj_req->repo->next;
- close(obj_req->local);
- obj_req->local = -1;
- start_object_request(obj_req);
- return;
- }
- }
-
- finish_object_request(obj_req);
-}
-
-static void release_object_request(struct object_request *obj_req)
-{
- struct object_request *entry = object_queue_head;
-
- if (obj_req->local != -1)
- error("fd leakage in release: %d", obj_req->local);
- if (obj_req == object_queue_head) {
- object_queue_head = obj_req->next;
- } else {
- while (entry->next != NULL && entry->next != obj_req)
- entry = entry->next;
- if (entry->next == obj_req)
- entry->next = entry->next->next;
- }
-
- free(obj_req->url);
- free(obj_req);
-}
-
-#ifdef USE_CURL_MULTI
-void fill_active_slots(void)
-{
- struct object_request *obj_req = object_queue_head;
- struct active_request_slot *slot = active_queue_head;
- int num_transfers;
-
- while (active_requests < max_requests && obj_req != NULL) {
- if (obj_req->state == WAITING) {
- if (has_sha1_file(obj_req->sha1))
- obj_req->state = COMPLETE;
- else
- start_object_request(obj_req);
- curl_multi_perform(curlm, &num_transfers);
- }
- obj_req = obj_req->next;
- }
-
- while (slot != NULL) {
- if (!slot->in_use && slot->curl != NULL) {
- curl_easy_cleanup(slot->curl);
- slot->curl = NULL;
- }
- slot = slot->next;
- }
-}
-#endif
-
-void prefetch(unsigned char *sha1)
-{
- struct object_request *newreq;
- struct object_request *tail;
- char *filename = sha1_file_name(sha1);
-
- newreq = xmalloc(sizeof(*newreq));
- hashcpy(newreq->sha1, sha1);
- newreq->repo = alt;
- newreq->url = NULL;
- newreq->local = -1;
- newreq->state = WAITING;
- snprintf(newreq->filename, sizeof(newreq->filename), "%s", filename);
- snprintf(newreq->tmpfile, sizeof(newreq->tmpfile),
- "%s.temp", filename);
- newreq->slot = NULL;
- newreq->next = NULL;
-
- if (object_queue_head == NULL) {
- object_queue_head = newreq;
- } else {
- tail = object_queue_head;
- while (tail->next != NULL) {
- tail = tail->next;
- }
- tail->next = newreq;
- }
-
-#ifdef USE_CURL_MULTI
- fill_active_slots();
- step_active_slots();
-#endif
-}
-
-static int fetch_index(struct alt_base *repo, unsigned char *sha1)
-{
- char *hex = sha1_to_hex(sha1);
- char *filename;
- char *url;
- char tmpfile[PATH_MAX];
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
- struct curl_slist *range_header = NULL;
-
- 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");
- if (!indexfile)
- return error("Unable to open local file %s for pack index",
- 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);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
- slot->local = indexfile;
-
- /* If there is data present from a previous transfer attempt,
- resume where it left off */
- prev_posn = ftell(indexfile);
- if (prev_posn>0) {
- if (get_verbosely)
- fprintf(stderr,
- "Resuming fetch of index for pack %s at byte %ld\n",
- hex, prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- range_header = curl_slist_append(range_header, range);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
- }
-
- if (start_active_slot(slot)) {
- run_active_slot(slot);
- if (results.curl_result != CURLE_OK) {
- fclose(indexfile);
- return error("Unable to get pack index %s\n%s", url,
- curl_errorstr);
- }
- } else {
- fclose(indexfile);
- return error("Unable to start request");
- }
-
- fclose(indexfile);
-
- return move_temp_to_file(tmpfile, filename);
-}
-
-static int setup_index(struct alt_base *repo, unsigned char *sha1)
-{
- struct packed_git *new_pack;
- if (has_pack_file(sha1))
- return 0; /* don't list this as something we can get */
-
- if (fetch_index(repo, sha1))
- return -1;
-
- new_pack = parse_pack_index(sha1);
- new_pack->next = repo->packs;
- repo->packs = new_pack;
- return 0;
-}
-
-static void process_alternates_response(void *callback_data)
-{
- struct alternates_request *alt_req =
- (struct alternates_request *)callback_data;
- struct active_request_slot *slot = alt_req->slot;
- struct alt_base *tail = alt;
- const char *base = alt_req->base;
- static const char null_byte = '\0';
- char *data;
- int i = 0;
-
- if (alt_req->http_specific) {
- if (slot->curl_result != CURLE_OK ||
- !alt_req->buffer->posn) {
-
- /* Try reusing the slot to get non-http alternates */
- alt_req->http_specific = 0;
- sprintf(alt_req->url, "%s/objects/info/alternates",
- base);
- curl_easy_setopt(slot->curl, CURLOPT_URL,
- alt_req->url);
- active_requests++;
- slot->in_use = 1;
- if (slot->finished != NULL)
- (*slot->finished) = 0;
- if (!start_active_slot(slot)) {
- got_alternates = -1;
- slot->in_use = 0;
- if (slot->finished != NULL)
- (*slot->finished) = 1;
- }
- return;
- }
- } else if (slot->curl_result != CURLE_OK) {
- if (!missing_target(slot)) {
- got_alternates = -1;
- return;
- }
- }
-
- fwrite_buffer(&null_byte, 1, 1, alt_req->buffer);
- alt_req->buffer->posn--;
- data = alt_req->buffer->buffer;
-
- while (i < alt_req->buffer->posn) {
- int posn = i;
- while (posn < alt_req->buffer->posn && data[posn] != '\n')
- posn++;
- if (data[posn] == '\n') {
- int okay = 0;
- int serverlen = 0;
- struct alt_base *newalt;
- char *target = NULL;
- if (data[i] == '/') {
- /* This counts
- * http://git.host/pub/scm/linux.git/
- * -----------here^
- * so memcpy(dst, base, serverlen) will
- * copy up to "...git.host".
- */
- const char *colon_ss = strstr(base,"://");
- if (colon_ss) {
- serverlen = (strchr(colon_ss + 3, '/')
- - base);
- okay = 1;
- }
- } else if (!memcmp(data + i, "../", 3)) {
- /* Relative URL; chop the corresponding
- * number of subpath from base (and ../
- * from data), and concatenate the result.
- *
- * The code first drops ../ from data, and
- * then drops one ../ from data and one path
- * from base. IOW, one extra ../ is dropped
- * from data than path is dropped from base.
- *
- * This is not wrong. The alternate in
- * http://git.host/pub/scm/linux.git/
- * to borrow from
- * http://git.host/pub/scm/linus.git/
- * is ../../linus.git/objects/. You need
- * two ../../ to borrow from your direct
- * neighbour.
- */
- i += 3;
- serverlen = strlen(base);
- while (i + 2 < posn &&
- !memcmp(data + i, "../", 3)) {
- do {
- serverlen--;
- } while (serverlen &&
- base[serverlen - 1] != '/');
- i += 3;
- }
- /* If the server got removed, give up. */
- okay = strchr(base, ':') - base + 3 <
- serverlen;
- } else if (alt_req->http_specific) {
- char *colon = strchr(data + i, ':');
- char *slash = strchr(data + i, '/');
- if (colon && slash && colon < data + posn &&
- slash < data + posn && colon < slash) {
- okay = 1;
- }
- }
- /* skip "objects\n" at end */
- if (okay) {
- target = xmalloc(serverlen + posn - i - 6);
- memcpy(target, base, serverlen);
- memcpy(target + serverlen, data + i,
- posn - i - 7);
- target[serverlen + posn - i - 7] = 0;
- if (get_verbosely)
- fprintf(stderr,
- "Also look at %s\n", target);
- newalt = xmalloc(sizeof(*newalt));
- newalt->next = NULL;
- newalt->base = target;
- newalt->got_indices = 0;
- newalt->packs = NULL;
-
- while (tail->next != NULL)
- tail = tail->next;
- tail->next = newalt;
- }
- }
- i = posn + 1;
- }
-
- got_alternates = 1;
-}
-
-static void fetch_alternates(const char *base)
-{
- struct buffer buffer;
- char *url;
- char *data;
- struct active_request_slot *slot;
- 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
- curl message */
-#ifdef USE_CURL_MULTI
- while (got_alternates == 0) {
- step_active_slots();
- }
-#endif
-
- /* Nothing to do if they've already been fetched */
- if (got_alternates == 1)
- return;
-
- /* Start the fetch */
- got_alternates = 0;
-
- data = xmalloc(4096);
- buffer.size = 4096;
- buffer.posn = 0;
- buffer.buffer = data;
-
- 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);
-
- /* Use a callback to process the result, since another request
- may fail and need to have alternates loaded before continuing */
- slot = get_active_slot();
- slot->callback_func = process_alternates_response;
- slot->callback_data = &alt_req;
-
- 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);
-
- alt_req.base = base;
- alt_req.url = url;
- alt_req.buffer = &buffer;
- alt_req.http_specific = 1;
- alt_req.slot = slot;
-
- if (start_active_slot(slot))
- run_active_slot(slot);
- else
- got_alternates = -1;
-
- free(data);
- free(url);
-}
-
-static int fetch_indices(struct alt_base *repo)
-{
- unsigned char sha1[20];
- char *url;
- struct buffer buffer;
- char *data;
- int i = 0;
-
- struct active_request_slot *slot;
- struct slot_results results;
-
- if (repo->got_indices)
- return 0;
-
- data = xmalloc(4096);
- buffer.size = 4096;
- buffer.posn = 0;
- buffer.buffer = data;
-
- 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 (results.curl_result != CURLE_OK) {
- if (missing_target(&results)) {
- repo->got_indices = 1;
- free(buffer.buffer);
- return 0;
- } else {
- repo->got_indices = 0;
- free(buffer.buffer);
- return error("%s", curl_errorstr);
- }
- }
- } else {
- repo->got_indices = 0;
- free(buffer.buffer);
- return error("Unable to start request");
- }
-
- data = buffer.buffer;
- while (i < buffer.posn) {
- switch (data[i]) {
- case 'P':
- i++;
- if (i + 52 <= buffer.posn &&
- !prefixcmp(data + i, " pack-") &&
- !prefixcmp(data + i + 46, ".pack\n")) {
- get_sha1_hex(data + i + 6, sha1);
- setup_index(repo, sha1);
- i += 51;
- break;
- }
- default:
- while (i < buffer.posn && data[i] != '\n')
- i++;
- }
- i++;
- }
-
- free(buffer.buffer);
- repo->got_indices = 1;
- return 0;
-}
-
-static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
-{
- char *url;
- struct packed_git *target;
- struct packed_git **lst;
- FILE *packfile;
- char *filename;
- char tmpfile[PATH_MAX];
- int ret;
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
- struct curl_slist *range_header = NULL;
-
- struct active_request_slot *slot;
- struct slot_results results;
-
- if (fetch_indices(repo))
- return -1;
- target = find_sha1_pack(sha1, repo->packs);
- if (!target)
- return -1;
-
- if (get_verbosely) {
- fprintf(stderr, "Getting pack %s\n",
- sha1_to_hex(target->sha1));
- fprintf(stderr, " which contains %s\n",
- sha1_to_hex(sha1));
- }
-
- url = xmalloc(strlen(repo->base) + 65);
- sprintf(url, "%s/objects/pack/pack-%s.pack",
- repo->base, sha1_to_hex(target->sha1));
-
- filename = sha1_pack_name(target->sha1);
- snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
- packfile = fopen(tmpfile, "a");
- if (!packfile)
- return error("Unable to open local file %s for pack",
- 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);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
- slot->local = packfile;
-
- /* If there is data present from a previous transfer attempt,
- resume where it left off */
- prev_posn = ftell(packfile);
- if (prev_posn>0) {
- if (get_verbosely)
- fprintf(stderr,
- "Resuming fetch of pack %s at byte %ld\n",
- sha1_to_hex(target->sha1), prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- range_header = curl_slist_append(range_header, range);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
- }
-
- if (start_active_slot(slot)) {
- run_active_slot(slot);
- if (results.curl_result != CURLE_OK) {
- fclose(packfile);
- return error("Unable to get pack file %s\n%s", url,
- curl_errorstr);
- }
- } else {
- fclose(packfile);
- return error("Unable to start request");
- }
-
- target->pack_size = ftell(packfile);
- fclose(packfile);
-
- ret = move_temp_to_file(tmpfile, filename);
- if (ret)
- return ret;
-
- lst = &repo->packs;
- while (*lst != target)
- lst = &((*lst)->next);
- *lst = (*lst)->next;
-
- if (verify_pack(target, 0))
- return -1;
- install_packed_git(target);
-
- 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);
- int ret = 0;
- struct object_request *obj_req = object_queue_head;
-
- while (obj_req != NULL && hashcmp(obj_req->sha1, sha1))
- obj_req = obj_req->next;
- if (obj_req == NULL)
- return error("Couldn't find request for %s in the queue", hex);
-
- if (has_sha1_file(obj_req->sha1)) {
- abort_object_request(obj_req);
- return 0;
- }
-
-#ifdef USE_CURL_MULTI
- while (obj_req->state == WAITING) {
- step_active_slots();
- }
-#else
- start_object_request(obj_req);
-#endif
-
- while (obj_req->state == ACTIVE) {
- run_active_slot(obj_req->slot);
- }
- if (obj_req->local != -1) {
- close(obj_req->local); obj_req->local = -1;
- }
-
- if (obj_req->state == ABORTED) {
- ret = error("Request for %s aborted", hex);
- } else if (obj_req->curl_result != CURLE_OK &&
- obj_req->http_code != 416) {
- if (missing_target(obj_req))
- 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) {
- corrupt_object_found++;
- ret = error("File %s (%s) corrupt", hex, obj_req->url);
- } else if (hashcmp(obj_req->sha1, obj_req->real_sha1)) {
- ret = error("File %s has bad hash", hex);
- } else if (obj_req->rename < 0) {
- ret = error("unable to write sha1 filename %s",
- obj_req->filename);
- }
-
- release_object_request(obj_req);
- return ret;
-}
-
-int fetch(unsigned char *sha1)
-{
- struct alt_base *altbase = alt;
-
- if (!fetch_object(altbase, sha1))
- return 0;
- while (altbase) {
- if (!fetch_pack(altbase, sha1))
- return 0;
- fetch_alternates(alt->base);
- altbase = altbase->next;
- }
- return error("Unable to find %s under %s", sha1_to_hex(sha1),
- alt->base);
-}
-
-static inline int needs_quote(int ch)
-{
- if (((ch >= 'A') && (ch <= 'Z'))
- || ((ch >= 'a') && (ch <= 'z'))
- || ((ch >= '0') && (ch <= '9'))
- || (ch == '/')
- || (ch == '-')
- || (ch == '.'))
- return 0;
- return 1;
-}
-
-static inline int hex(int v)
-{
- if (v < 10) return '0' + v;
- else return 'A' + v - 10;
-}
-
-static char *quote_ref_url(const char *base, const char *ref)
-{
- const char *cp;
- char *dp, *qref;
- int len, baselen, ch;
-
- baselen = strlen(base);
- len = baselen + 7; /* "/refs/" + NUL */
- for (cp = ref; (ch = *cp) != 0; cp++, len++)
- if (needs_quote(ch))
- len += 2; /* extra two hex plus replacement % */
- qref = xmalloc(len);
- memcpy(qref, base, baselen);
- memcpy(qref + baselen, "/refs/", 6);
- for (cp = ref, dp = qref + baselen + 6; (ch = *cp) != 0; cp++) {
- if (needs_quote(ch)) {
- *dp++ = '%';
- *dp++ = hex((ch >> 4) & 0xF);
- *dp++ = hex(ch & 0xF);
- }
- else
- *dp++ = ch;
- }
- *dp = 0;
-
- return qref;
-}
-
-int fetch_ref(char *ref, unsigned char *sha1)
-{
- char *url;
- char hex[42];
- struct buffer buffer;
- const 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 (results.curl_result != CURLE_OK)
- return error("Couldn't get %s for %s\n%s",
- url, ref, curl_errorstr);
- } else {
- return error("Unable to start request");
- }
-
- hex[40] = '\0';
- get_sha1_hex(hex, sha1);
- return 0;
-}
+#include "walker.h"
int main(int argc, const char **argv)
{
+ const char *prefix;
+ struct walker *walker;
+ int commits_on_stdin = 0;
int commits;
const char **write_ref = NULL;
char **commit_id;
const char *url;
- char *s;
+ char *rewritten_url = NULL;
int arg = 1;
int rc = 0;
+ int get_tree = 0;
+ int get_history = 0;
+ int get_all = 0;
+ int get_verbosely = 0;
+ int get_recover = 0;
+
+ prefix = setup_git_directory();
- setup_git_directory();
- git_config(git_default_config);
+ git_config(git_default_config, NULL);
while (arg < argc && argv[arg][0] == '-') {
if (argv[arg][1] == 't') {
arg++;
}
if (argc < arg + 2 - commits_on_stdin) {
- usage("git-http-fetch [-c] [-t] [-a] [-v] [--recover] [-w ref] [--stdin] commit-id url");
+ usage("git http-fetch [-c] [-t] [-a] [-v] [--recover] [-w ref] [--stdin] commit-id url");
return 1;
}
if (commits_on_stdin) {
- commits = pull_targets_stdin(&commit_id, &write_ref);
+ commits = walker_targets_stdin(&commit_id, &write_ref);
} else {
commit_id = (char **) &argv[arg++];
commits = 1;
}
url = argv[arg];
+ if (url && url[strlen(url)-1] != '/') {
+ rewritten_url = xmalloc(strlen(url)+2);
+ strcpy(rewritten_url, url);
+ strcat(rewritten_url, "/");
+ url = rewritten_url;
+ }
- http_init();
-
- no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
-
- alt = xmalloc(sizeof(*alt));
- alt->base = xmalloc(strlen(url) + 1);
- strcpy(alt->base, url);
- for (s = alt->base + strlen(alt->base) - 1; *s == '/'; --s)
- *s = 0;
- alt->got_indices = 0;
- alt->packs = NULL;
- alt->next = NULL;
-
- if (pull(commits, commit_id, write_ref, url))
- rc = 1;
-
- http_cleanup();
+ walker = get_http_walker(url, NULL);
+ walker->get_tree = get_tree;
+ walker->get_history = get_history;
+ walker->get_all = get_all;
+ walker->get_verbosely = get_verbosely;
+ walker->get_recover = get_recover;
- curl_slist_free_all(no_pragma_header);
+ rc = walker_fetch(walker, commits, commit_id, write_ref, url);
if (commits_on_stdin)
- pull_targets_free(commits, commit_id, write_ref);
+ walker_targets_free(commits, commit_id, write_ref);
- if (corrupt_object_found) {
+ if (walker->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.\n");
+"status code. Suggest running 'git fsck'.\n");
}
+
+ walker_free(walker);
+
+ free(rewritten_url);
+
return rc;
}
projects / thirdparty / git.git / blobdiff