#include "walker.h"
#include "http.h"
#include "exec_cmd.h"
+#include "run-command.h"
+#include "pkt-line.h"
+#include "sideband.h"
-static struct ref *get_refs(struct walker *walker, const char *url)
+static struct remote *remote;
+static const char *url;
+static struct walker *walker;
+
+struct options {
+ int verbosity;
+ unsigned long depth;
+ unsigned progress : 1,
+ followtags : 1,
+ dry_run : 1,
+ thin : 1;
+};
+static struct options options;
+
+static void init_walker(void)
+{
+ if (!walker)
+ walker = get_http_walker(url, remote);
+}
+
+static int set_option(const char *name, const char *value)
+{
+ if (!strcmp(name, "verbosity")) {
+ char *end;
+ int v = strtol(value, &end, 10);
+ if (value == end || *end)
+ return -1;
+ options.verbosity = v;
+ return 0;
+ }
+ else if (!strcmp(name, "progress")) {
+ if (!strcmp(value, "true"))
+ options.progress = 1;
+ else if (!strcmp(value, "false"))
+ options.progress = 0;
+ else
+ return -1;
+ return 0;
+ }
+ else if (!strcmp(name, "depth")) {
+ char *end;
+ unsigned long v = strtoul(value, &end, 10);
+ if (value == end || *end)
+ return -1;
+ options.depth = v;
+ return 0;
+ }
+ else if (!strcmp(name, "followtags")) {
+ if (!strcmp(value, "true"))
+ options.followtags = 1;
+ else if (!strcmp(value, "false"))
+ options.followtags = 0;
+ else
+ return -1;
+ return 0;
+ }
+ else if (!strcmp(name, "dry-run")) {
+ if (!strcmp(value, "true"))
+ options.dry_run = 1;
+ else if (!strcmp(value, "false"))
+ options.dry_run = 0;
+ else
+ return -1;
+ return 0;
+ }
+ else {
+ return 1 /* unsupported */;
+ }
+}
+
+struct discovery {
+ const char *service;
+ char *buf_alloc;
+ char *buf;
+ size_t len;
+ unsigned proto_git : 1;
+};
+static struct discovery *last_discovery;
+
+static void free_discovery(struct discovery *d)
+{
+ if (d) {
+ if (d == last_discovery)
+ last_discovery = NULL;
+ free(d->buf_alloc);
+ free(d);
+ }
+}
+
+static struct discovery* discover_refs(const char *service)
{
struct strbuf buffer = STRBUF_INIT;
- char *data, *start, *mid;
- char *ref_name;
+ struct discovery *last = last_discovery;
char *refs_url;
- int i = 0;
- int http_ret;
+ int http_ret, is_http = 0;
- struct ref *refs = NULL;
- struct ref *ref = NULL;
- struct ref *last_ref = NULL;
+ if (last && !strcmp(service, last->service))
+ return last;
+ free_discovery(last);
- refs_url = xmalloc(strlen(url) + 11);
- sprintf(refs_url, "%s/info/refs", url);
+ strbuf_addf(&buffer, "%s/info/refs", url);
+ if (!prefixcmp(url, "http://") || !prefixcmp(url, "https://")) {
+ is_http = 1;
+ if (!strchr(url, '?'))
+ strbuf_addch(&buffer, '?');
+ else
+ strbuf_addch(&buffer, '&');
+ strbuf_addf(&buffer, "service=%s", service);
+ }
+ refs_url = strbuf_detach(&buffer, NULL);
+ init_walker();
http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
switch (http_ret) {
case HTTP_OK:
die("HTTP request failed");
}
- data = buffer.buf;
+ last= xcalloc(1, sizeof(*last_discovery));
+ last->service = service;
+ last->buf_alloc = strbuf_detach(&buffer, &last->len);
+ last->buf = last->buf_alloc;
+
+ if (is_http && 5 <= last->len && last->buf[4] == '#') {
+ /* smart HTTP response; validate that the service
+ * pkt-line matches our request.
+ */
+ struct strbuf exp = STRBUF_INIT;
+
+ if (packet_get_line(&buffer, &last->buf, &last->len) <= 0)
+ die("%s has invalid packet header", refs_url);
+ if (buffer.len && buffer.buf[buffer.len - 1] == '\n')
+ strbuf_setlen(&buffer, buffer.len - 1);
+
+ strbuf_addf(&exp, "# service=%s", service);
+ if (strbuf_cmp(&exp, &buffer))
+ die("invalid server response; got '%s'", buffer.buf);
+ strbuf_release(&exp);
+
+ /* The header can include additional metadata lines, up
+ * until a packet flush marker. Ignore these now, but
+ * in the future we might start to scan them.
+ */
+ strbuf_reset(&buffer);
+ while (packet_get_line(&buffer, &last->buf, &last->len) > 0)
+ strbuf_reset(&buffer);
+
+ last->proto_git = 1;
+ }
+
+ free(refs_url);
+ strbuf_release(&buffer);
+ last_discovery = last;
+ return last;
+}
+
+static int write_discovery(int fd, void *data)
+{
+ struct discovery *heads = data;
+ int err = 0;
+ if (write_in_full(fd, heads->buf, heads->len) != heads->len)
+ err = 1;
+ close(fd);
+ return err;
+}
+
+static struct ref *parse_git_refs(struct discovery *heads)
+{
+ struct ref *list = NULL;
+ struct async async;
+
+ memset(&async, 0, sizeof(async));
+ async.proc = write_discovery;
+ async.data = heads;
+
+ if (start_async(&async))
+ die("cannot start thread to parse advertised refs");
+ get_remote_heads(async.out, &list, 0, NULL, 0, NULL);
+ close(async.out);
+ if (finish_async(&async))
+ die("ref parsing thread failed");
+ return list;
+}
+
+static struct ref *parse_info_refs(struct discovery *heads)
+{
+ char *data, *start, *mid;
+ char *ref_name;
+ int i = 0;
+
+ struct ref *refs = NULL;
+ struct ref *ref = NULL;
+ struct ref *last_ref = NULL;
+
+ data = heads->buf;
start = NULL;
mid = data;
- while (i < buffer.len) {
+ while (i < heads->len) {
if (!start) {
start = &data[i];
}
i++;
}
- strbuf_release(&buffer);
-
+ init_walker();
ref = alloc_ref("HEAD");
if (!walker->fetch_ref(walker, ref) &&
!resolve_remote_symref(ref, refs)) {
free(ref);
}
- strbuf_release(&buffer);
- free(refs_url);
return refs;
}
+static struct ref *get_refs(int for_push)
+{
+ struct discovery *heads;
+
+ if (for_push)
+ heads = discover_refs("git-receive-pack");
+ else
+ heads = discover_refs("git-upload-pack");
+
+ if (heads->proto_git)
+ return parse_git_refs(heads);
+ return parse_info_refs(heads);
+}
+
+static void output_refs(struct ref *refs)
+{
+ struct ref *posn;
+ 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);
+ free_refs(refs);
+}
+
+struct rpc_state {
+ const char *service_name;
+ const char **argv;
+ char *service_url;
+ char *hdr_content_type;
+ char *hdr_accept;
+ char *buf;
+ size_t alloc;
+ size_t len;
+ size_t pos;
+ int in;
+ int out;
+ struct strbuf result;
+ unsigned gzip_request : 1;
+};
+
+static size_t rpc_out(void *ptr, size_t eltsize,
+ size_t nmemb, void *buffer_)
+{
+ size_t max = eltsize * nmemb;
+ struct rpc_state *rpc = buffer_;
+ size_t avail = rpc->len - rpc->pos;
+
+ if (!avail) {
+ avail = packet_read_line(rpc->out, rpc->buf, rpc->alloc);
+ if (!avail)
+ return 0;
+ rpc->pos = 0;
+ rpc->len = avail;
+ }
+
+ if (max < avail);
+ avail = max;
+ memcpy(ptr, rpc->buf + rpc->pos, avail);
+ rpc->pos += avail;
+ return avail;
+}
+
+static size_t rpc_in(const void *ptr, size_t eltsize,
+ size_t nmemb, void *buffer_)
+{
+ size_t size = eltsize * nmemb;
+ struct rpc_state *rpc = buffer_;
+ write_or_die(rpc->in, ptr, size);
+ return size;
+}
+
+static int post_rpc(struct rpc_state *rpc)
+{
+ struct active_request_slot *slot;
+ struct slot_results results;
+ struct curl_slist *headers = NULL;
+ int use_gzip = rpc->gzip_request;
+ char *gzip_body = NULL;
+ int err = 0, large_request = 0;
+
+ /* Try to load the entire request, if we can fit it into the
+ * allocated buffer space we can use HTTP/1.0 and avoid the
+ * chunked encoding mess.
+ */
+ while (1) {
+ size_t left = rpc->alloc - rpc->len;
+ char *buf = rpc->buf + rpc->len;
+ int n;
+
+ if (left < LARGE_PACKET_MAX) {
+ large_request = 1;
+ use_gzip = 0;
+ break;
+ }
+
+ n = packet_read_line(rpc->out, buf, left);
+ if (!n)
+ break;
+ rpc->len += n;
+ }
+
+ slot = get_active_slot();
+ slot->results = &results;
+
+ curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
+ curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
+ curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
+ curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
+
+ headers = curl_slist_append(headers, rpc->hdr_content_type);
+ headers = curl_slist_append(headers, rpc->hdr_accept);
+
+ if (large_request) {
+ /* The request body is large and the size cannot be predicted.
+ * We must use chunked encoding to send it.
+ */
+ headers = curl_slist_append(headers, "Expect: 100-continue");
+ headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
+ curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
+ curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
+ if (options.verbosity > 1) {
+ fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
+ fflush(stderr);
+ }
+
+ } else if (use_gzip && 1024 < rpc->len) {
+ /* The client backend isn't giving us compressed data so
+ * we can try to deflate it ourselves, this may save on.
+ * the transfer time.
+ */
+ size_t size;
+ z_stream stream;
+ int ret;
+
+ memset(&stream, 0, sizeof(stream));
+ ret = deflateInit2(&stream, Z_BEST_COMPRESSION,
+ Z_DEFLATED, (15 + 16),
+ 8, Z_DEFAULT_STRATEGY);
+ if (ret != Z_OK)
+ die("cannot deflate request; zlib init error %d", ret);
+ size = deflateBound(&stream, rpc->len);
+ gzip_body = xmalloc(size);
+
+ stream.next_in = (unsigned char *)rpc->buf;
+ stream.avail_in = rpc->len;
+ stream.next_out = (unsigned char *)gzip_body;
+ stream.avail_out = size;
+
+ ret = deflate(&stream, Z_FINISH);
+ if (ret != Z_STREAM_END)
+ die("cannot deflate request; zlib deflate error %d", ret);
+
+ ret = deflateEnd(&stream);
+ if (ret != Z_OK)
+ die("cannot deflate request; zlib end error %d", ret);
+
+ size = stream.total_out;
+
+ headers = curl_slist_append(headers, "Content-Encoding: gzip");
+ curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
+ curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, size);
+
+ if (options.verbosity > 1) {
+ fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
+ rpc->service_name,
+ (unsigned long)rpc->len, (unsigned long)size);
+ fflush(stderr);
+ }
+ } else {
+ /* We know the complete request size in advance, use the
+ * more normal Content-Length approach.
+ */
+ curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
+ curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
+ if (options.verbosity > 1) {
+ fprintf(stderr, "POST %s (%lu bytes)\n",
+ rpc->service_name, (unsigned long)rpc->len);
+ fflush(stderr);
+ }
+ }
+
+ curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
+ curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
+ curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
+
+ slot->curl_result = curl_easy_perform(slot->curl);
+ finish_active_slot(slot);
+
+ if (results.curl_result != CURLE_OK) {
+ err |= error("RPC failed; result=%d, HTTP code = %ld",
+ results.curl_result, results.http_code);
+ }
+
+ curl_slist_free_all(headers);
+ free(gzip_body);
+ return err;
+}
+
+static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
+{
+ const char *svc = rpc->service_name;
+ struct strbuf buf = STRBUF_INIT;
+ struct child_process client;
+ int err = 0;
+
+ init_walker();
+ memset(&client, 0, sizeof(client));
+ client.in = -1;
+ client.out = -1;
+ client.git_cmd = 1;
+ client.argv = rpc->argv;
+ if (start_command(&client))
+ exit(1);
+ if (heads)
+ write_or_die(client.in, heads->buf, heads->len);
+
+ rpc->alloc = http_post_buffer;
+ rpc->buf = xmalloc(rpc->alloc);
+ rpc->in = client.in;
+ rpc->out = client.out;
+ strbuf_init(&rpc->result, 0);
+
+ strbuf_addf(&buf, "%s/%s", url, svc);
+ rpc->service_url = strbuf_detach(&buf, NULL);
+
+ strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
+ rpc->hdr_content_type = strbuf_detach(&buf, NULL);
+
+ strbuf_addf(&buf, "Accept: application/x-%s-response", svc);
+ rpc->hdr_accept = strbuf_detach(&buf, NULL);
+
+ while (!err) {
+ int n = packet_read_line(rpc->out, rpc->buf, rpc->alloc);
+ if (!n)
+ break;
+ rpc->pos = 0;
+ rpc->len = n;
+ err |= post_rpc(rpc);
+ }
+ strbuf_read(&rpc->result, client.out, 0);
+
+ close(client.in);
+ close(client.out);
+ client.in = -1;
+ client.out = -1;
+
+ err |= finish_command(&client);
+ free(rpc->service_url);
+ free(rpc->hdr_content_type);
+ free(rpc->hdr_accept);
+ free(rpc->buf);
+ strbuf_release(&buf);
+ return err;
+}
+
+static int fetch_dumb(int nr_heads, struct ref **to_fetch)
+{
+ char **targets = xmalloc(nr_heads * sizeof(char*));
+ int ret, i;
+
+ if (options.depth)
+ die("dumb http transport does not support --depth");
+ for (i = 0; i < nr_heads; i++)
+ targets[i] = xstrdup(sha1_to_hex(to_fetch[i]->old_sha1));
+
+ init_walker();
+ walker->get_all = 1;
+ walker->get_tree = 1;
+ walker->get_history = 1;
+ walker->get_verbosely = options.verbosity >= 3;
+ walker->get_recover = 0;
+ ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
+
+ for (i = 0; i < nr_heads; i++)
+ free(targets[i]);
+ free(targets);
+
+ return ret ? error("Fetch failed.") : 0;
+}
+
+static int fetch_git(struct discovery *heads,
+ int nr_heads, struct ref **to_fetch)
+{
+ struct rpc_state rpc;
+ char *depth_arg = NULL;
+ const char **argv;
+ int argc = 0, i, err;
+
+ argv = xmalloc((15 + nr_heads) * sizeof(char*));
+ argv[argc++] = "fetch-pack";
+ argv[argc++] = "--stateless-rpc";
+ argv[argc++] = "--lock-pack";
+ if (options.followtags)
+ argv[argc++] = "--include-tag";
+ if (options.thin)
+ argv[argc++] = "--thin";
+ if (options.verbosity >= 3) {
+ argv[argc++] = "-v";
+ argv[argc++] = "-v";
+ }
+ if (!options.progress)
+ argv[argc++] = "--no-progress";
+ if (options.depth) {
+ struct strbuf buf = STRBUF_INIT;
+ strbuf_addf(&buf, "--depth=%lu", options.depth);
+ depth_arg = strbuf_detach(&buf, NULL);
+ argv[argc++] = depth_arg;
+ }
+ argv[argc++] = url;
+ for (i = 0; i < nr_heads; i++) {
+ struct ref *ref = to_fetch[i];
+ if (!ref->name || !*ref->name)
+ die("cannot fetch by sha1 over smart http");
+ argv[argc++] = ref->name;
+ }
+ argv[argc++] = NULL;
+
+ memset(&rpc, 0, sizeof(rpc));
+ rpc.service_name = "git-upload-pack",
+ rpc.argv = argv;
+ rpc.gzip_request = 1;
+
+ err = rpc_service(&rpc, heads);
+ if (rpc.result.len)
+ safe_write(1, rpc.result.buf, rpc.result.len);
+ strbuf_release(&rpc.result);
+ free(argv);
+ free(depth_arg);
+ return err;
+}
+
+static int fetch(int nr_heads, struct ref **to_fetch)
+{
+ struct discovery *d = discover_refs("git-upload-pack");
+ if (d->proto_git)
+ return fetch_git(d, nr_heads, to_fetch);
+ else
+ return fetch_dumb(nr_heads, to_fetch);
+}
+
+static void parse_fetch(struct strbuf *buf)
+{
+ struct ref **to_fetch = NULL;
+ struct ref *list_head = NULL;
+ struct ref **list = &list_head;
+ int alloc_heads = 0, nr_heads = 0;
+
+ do {
+ if (!prefixcmp(buf->buf, "fetch ")) {
+ char *p = buf->buf + strlen("fetch ");
+ char *name;
+ struct ref *ref;
+ unsigned char old_sha1[20];
+
+ if (strlen(p) < 40 || get_sha1_hex(p, old_sha1))
+ die("protocol error: expected sha/ref, got %s'", p);
+ if (p[40] == ' ')
+ name = p + 41;
+ else if (!p[40])
+ name = "";
+ else
+ die("protocol error: expected sha/ref, got %s'", p);
+
+ ref = alloc_ref(name);
+ hashcpy(ref->old_sha1, old_sha1);
+
+ *list = ref;
+ list = &ref->next;
+
+ ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
+ to_fetch[nr_heads++] = ref;
+ }
+ else
+ die("http transport does not support %s", buf->buf);
+
+ strbuf_reset(buf);
+ if (strbuf_getline(buf, stdin, '\n') == EOF)
+ return;
+ if (!*buf->buf)
+ break;
+ } while (1);
+
+ if (fetch(nr_heads, to_fetch))
+ exit(128); /* error already reported */
+ free_refs(list_head);
+ free(to_fetch);
+
+ printf("\n");
+ fflush(stdout);
+ strbuf_reset(buf);
+}
+
+static int push_dav(int nr_spec, char **specs)
+{
+ const char **argv = xmalloc((10 + nr_spec) * sizeof(char*));
+ int argc = 0, i;
+
+ argv[argc++] = "http-push";
+ argv[argc++] = "--helper-status";
+ if (options.dry_run)
+ argv[argc++] = "--dry-run";
+ if (options.verbosity > 1)
+ argv[argc++] = "--verbose";
+ argv[argc++] = url;
+ for (i = 0; i < nr_spec; i++)
+ argv[argc++] = specs[i];
+ argv[argc++] = NULL;
+
+ if (run_command_v_opt(argv, RUN_GIT_CMD))
+ die("git-%s failed", argv[0]);
+ free(argv);
+ return 0;
+}
+
+static int push_git(struct discovery *heads, int nr_spec, char **specs)
+{
+ struct rpc_state rpc;
+ const char **argv;
+ int argc = 0, i, err;
+
+ argv = xmalloc((10 + nr_spec) * sizeof(char*));
+ argv[argc++] = "send-pack";
+ argv[argc++] = "--stateless-rpc";
+ argv[argc++] = "--helper-status";
+ if (options.thin)
+ argv[argc++] = "--thin";
+ if (options.dry_run)
+ argv[argc++] = "--dry-run";
+ if (options.verbosity > 1)
+ argv[argc++] = "--verbose";
+ argv[argc++] = url;
+ for (i = 0; i < nr_spec; i++)
+ argv[argc++] = specs[i];
+ argv[argc++] = NULL;
+
+ memset(&rpc, 0, sizeof(rpc));
+ rpc.service_name = "git-receive-pack",
+ rpc.argv = argv;
+
+ err = rpc_service(&rpc, heads);
+ if (rpc.result.len)
+ safe_write(1, rpc.result.buf, rpc.result.len);
+ strbuf_release(&rpc.result);
+ free(argv);
+ return err;
+}
+
+static int push(int nr_spec, char **specs)
+{
+ struct discovery *heads = discover_refs("git-receive-pack");
+ int ret;
+
+ if (heads->proto_git)
+ ret = push_git(heads, nr_spec, specs);
+ else
+ ret = push_dav(nr_spec, specs);
+ free_discovery(heads);
+ return ret;
+}
+
+static void parse_push(struct strbuf *buf)
+{
+ char **specs = NULL;
+ int alloc_spec = 0, nr_spec = 0, i;
+
+ do {
+ if (!prefixcmp(buf->buf, "push ")) {
+ ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
+ specs[nr_spec++] = xstrdup(buf->buf + 5);
+ }
+ else
+ die("http transport does not support %s", buf->buf);
+
+ strbuf_reset(buf);
+ if (strbuf_getline(buf, stdin, '\n') == EOF)
+ return;
+ if (!*buf->buf)
+ break;
+ } while (1);
+
+ if (push(nr_spec, specs))
+ exit(128); /* error already reported */
+ for (i = 0; i < nr_spec; i++)
+ free(specs[i]);
+ free(specs);
+
+ printf("\n");
+ fflush(stdout);
+}
+
int main(int argc, const char **argv)
{
- struct remote *remote;
struct strbuf buf = STRBUF_INIT;
- const char *url;
- struct walker *walker = NULL;
+ int nongit;
git_extract_argv0_path(argv[0]);
- setup_git_directory();
+ setup_git_directory_gently(&nongit);
if (argc < 2) {
fprintf(stderr, "Remote needed\n");
return 1;
}
+ options.verbosity = 1;
+ options.progress = !!isatty(2);
+ options.thin = 1;
+
remote = remote_get(argv[1]);
if (argc > 2) {
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");
+ if (nongit)
+ die("Fetch attempted without a local repo");
+ parse_fetch(&buf);
+
+ } else if (!strcmp(buf.buf, "list") || !prefixcmp(buf.buf, "list ")) {
+ int for_push = !!strstr(buf.buf + 4, "for-push");
+ output_refs(get_refs(for_push));
+
+ } else if (!prefixcmp(buf.buf, "push ")) {
+ parse_push(&buf);
+
+ } else if (!prefixcmp(buf.buf, "option ")) {
+ char *name = buf.buf + strlen("option ");
+ char *value = strchr(name, ' ');
+ int result;
+
+ if (value)
+ *value++ = '\0';
+ else
+ value = "true";
+
+ result = set_option(name, value);
+ if (!result)
+ printf("ok\n");
+ else if (result < 0)
+ printf("error invalid value\n");
+ else
+ printf("unsupported\n");
fflush(stdout);
+
} else if (!strcmp(buf.buf, "capabilities")) {
printf("fetch\n");
+ printf("option\n");
+ printf("push\n");
printf("\n");
fflush(stdout);
} else {