-#include "cache.h"
+#include "builtin.h"
+#include "commit.h"
+#include "refs.h"
#include "pkt-line.h"
+#include "sideband.h"
+#include "run-command.h"
+#include "remote.h"
+#include "send-pack.h"
+#include "quote.h"
+#include "transport.h"
+#include "version.h"
-static const char send_pack_usage[] = "git-send-pack [--exec=other] destination [heads]*";
-static const char *exec = "git-receive-pack";
-
-static int path_match(const char *path, int nr, char **match)
+static int feed_object(const unsigned char *sha1, int fd, int negative)
{
- int i;
- int pathlen = strlen(path);
-
- for (i = 0; i < nr; i++) {
- char *s = match[i];
- int len = strlen(s);
+ char buf[42];
- if (!len || len > pathlen)
- continue;
- if (memcmp(path + pathlen - len, s, len))
- continue;
- if (pathlen > len && path[pathlen - len - 1] != '/')
- continue;
- *s = 0;
+ if (negative && !has_sha1_file(sha1))
return 1;
- }
- return 0;
-}
-struct ref {
- struct ref *next;
- unsigned char old_sha1[20];
- unsigned char new_sha1[20];
- char name[0];
-};
+ memcpy(buf + negative, sha1_to_hex(sha1), 40);
+ if (negative)
+ buf[0] = '^';
+ buf[40 + negative] = '\n';
+ return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
+}
-static void exec_pack_objects(void)
+/*
+ * Make a pack stream and spit it out into file descriptor fd
+ */
+static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args)
{
- static char *args[] = {
- "git-pack-objects",
+ /*
+ * The child becomes pack-objects --revs; we feed
+ * the revision parameters to it via its stdin and
+ * let its stdout go back to the other end.
+ */
+ const char *argv[] = {
+ "pack-objects",
+ "--all-progress-implied",
+ "--revs",
"--stdout",
- NULL
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
};
- execvp("git-pack-objects", args);
- die("git-pack-objects exec failed (%s)", strerror(errno));
-}
+ struct child_process po;
+ int i;
-static void exec_rev_list(struct ref *refs)
-{
- static char *args[1000];
- int i = 0;
+ i = 4;
+ if (args->use_thin_pack)
+ argv[i++] = "--thin";
+ if (args->use_ofs_delta)
+ argv[i++] = "--delta-base-offset";
+ if (args->quiet || !args->progress)
+ argv[i++] = "-q";
+ if (args->progress)
+ argv[i++] = "--progress";
+ memset(&po, 0, sizeof(po));
+ po.argv = argv;
+ po.in = -1;
+ po.out = args->stateless_rpc ? -1 : fd;
+ po.git_cmd = 1;
+ if (start_command(&po))
+ die_errno("git pack-objects failed");
+
+ /*
+ * We feed the pack-objects we just spawned with revision
+ * parameters by writing to the pipe.
+ */
+ for (i = 0; i < extra->nr; i++)
+ if (!feed_object(extra->array[i], po.in, 1))
+ break;
- args[i++] = "git-rev-list"; /* 0 */
- args[i++] = "--objects"; /* 1 */
while (refs) {
- char *buf = malloc(100);
- if (i > 900)
- die("git-rev-list environment overflow");
- args[i++] = buf;
- snprintf(buf, 50, "^%s", sha1_to_hex(refs->old_sha1));
- buf += 50;
- args[i++] = buf;
- snprintf(buf, 50, "%s", sha1_to_hex(refs->new_sha1));
+ if (!is_null_sha1(refs->old_sha1) &&
+ !feed_object(refs->old_sha1, po.in, 1))
+ break;
+ if (!is_null_sha1(refs->new_sha1) &&
+ !feed_object(refs->new_sha1, po.in, 0))
+ break;
refs = refs->next;
}
- args[i] = NULL;
- execvp("git-rev-list", args);
- die("git-rev-list exec failed (%s)", strerror(errno));
-}
-static void rev_list(int fd, struct ref *refs)
-{
- int pipe_fd[2];
- pid_t pack_objects_pid;
-
- if (pipe(pipe_fd) < 0)
- die("rev-list setup: pipe failed");
- pack_objects_pid = fork();
- if (!pack_objects_pid) {
- dup2(pipe_fd[0], 0);
- dup2(fd, 1);
- close(pipe_fd[0]);
- close(pipe_fd[1]);
- close(fd);
- exec_pack_objects();
- die("pack-objects setup failed");
+ close(po.in);
+
+ if (args->stateless_rpc) {
+ char *buf = xmalloc(LARGE_PACKET_MAX);
+ while (1) {
+ ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
+ if (n <= 0)
+ break;
+ send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
+ }
+ free(buf);
+ close(po.out);
+ po.out = -1;
}
- if (pack_objects_pid < 0)
- die("pack-objects fork failed");
- dup2(pipe_fd[1], 1);
- close(pipe_fd[0]);
- close(pipe_fd[1]);
- close(fd);
- exec_rev_list(refs);
+
+ if (finish_command(&po))
+ return -1;
+ return 0;
}
-static int pack_objects(int fd, struct ref *refs)
+static int receive_status(int in, struct ref *refs)
{
- pid_t rev_list_pid;
+ struct ref *hint;
+ char line[1000];
+ int ret = 0;
+ int len = packet_read_line(in, line, sizeof(line));
+ if (len < 10 || memcmp(line, "unpack ", 7))
+ return error("did not receive remote status");
+ if (memcmp(line, "unpack ok\n", 10)) {
+ char *p = line + strlen(line) - 1;
+ if (*p == '\n')
+ *p = '\0';
+ error("unpack failed: %s", line + 7);
+ ret = -1;
+ }
+ hint = NULL;
+ while (1) {
+ char *refname;
+ char *msg;
+ len = packet_read_line(in, line, sizeof(line));
+ if (!len)
+ break;
+ if (len < 3 ||
+ (memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) {
+ fprintf(stderr, "protocol error: %s\n", line);
+ ret = -1;
+ break;
+ }
+
+ line[strlen(line)-1] = '\0';
+ refname = line + 3;
+ msg = strchr(refname, ' ');
+ if (msg)
+ *msg++ = '\0';
+
+ /* first try searching at our hint, falling back to all refs */
+ if (hint)
+ hint = find_ref_by_name(hint, refname);
+ if (!hint)
+ hint = find_ref_by_name(refs, refname);
+ if (!hint) {
+ warning("remote reported status on unknown ref: %s",
+ refname);
+ continue;
+ }
+ if (hint->status != REF_STATUS_EXPECTING_REPORT) {
+ warning("remote reported status on unexpected ref: %s",
+ refname);
+ continue;
+ }
- rev_list_pid = fork();
- if (!rev_list_pid) {
- rev_list(fd, refs);
- die("rev-list setup failed");
+ if (line[0] == 'o' && line[1] == 'k')
+ hint->status = REF_STATUS_OK;
+ else {
+ hint->status = REF_STATUS_REMOTE_REJECT;
+ ret = -1;
+ }
+ if (msg)
+ hint->remote_status = xstrdup(msg);
+ /* start our next search from the next ref */
+ hint = hint->next;
}
- if (rev_list_pid < 0)
- die("rev-list fork failed");
- /*
- * We don't wait for the rev-list pipeline in the parent:
- * we end up waiting for the other end instead
- */
- return 0;
+ return ret;
}
-static int read_ref(const char *ref, unsigned char *sha1)
+static int sideband_demux(int in, int out, void *data)
{
- int fd, ret;
- static char pathname[PATH_MAX];
- char buffer[60];
- const char *git_dir = gitenv(GIT_DIR_ENVIRONMENT) ? : DEFAULT_GIT_DIR_ENVIRONMENT;
-
- snprintf(pathname, sizeof(pathname), "%s/%s", git_dir, ref);
- fd = open(pathname, O_RDONLY);
- if (fd < 0)
- return -1;
- ret = -1;
- if (read(fd, buffer, sizeof(buffer)) >= 40)
- ret = get_sha1_hex(buffer, sha1);
- close(fd);
+ int *fd = data, ret;
+#ifdef NO_PTHREADS
+ close(fd[1]);
+#endif
+ ret = recv_sideband("send-pack", fd[0], out);
+ close(out);
return ret;
}
-static int send_pack(int in, int out, int nr_match, char **match)
+int send_pack(struct send_pack_args *args,
+ int fd[], struct child_process *conn,
+ struct ref *remote_refs,
+ struct extra_have_objects *extra_have)
{
- struct ref *ref_list = NULL, **last_ref = &ref_list;
+ int in = fd[0];
+ int out = fd[1];
+ struct strbuf req_buf = STRBUF_INIT;
struct ref *ref;
+ int new_refs;
+ int allow_deleting_refs = 0;
+ int status_report = 0;
+ int use_sideband = 0;
+ int quiet_supported = 0;
+ int agent_supported = 0;
+ unsigned cmds_sent = 0;
+ int ret;
+ struct async demux;
- for (;;) {
- unsigned char old_sha1[20];
- unsigned char new_sha1[20];
- static char buffer[1000];
- char *name;
- int len;
+ /* Does the other end support the reporting? */
+ if (server_supports("report-status"))
+ status_report = 1;
+ if (server_supports("delete-refs"))
+ allow_deleting_refs = 1;
+ if (server_supports("ofs-delta"))
+ args->use_ofs_delta = 1;
+ if (server_supports("side-band-64k"))
+ use_sideband = 1;
+ if (server_supports("quiet"))
+ quiet_supported = 1;
+ if (server_supports("agent"))
+ agent_supported = 1;
- len = packet_read_line(in, buffer, sizeof(buffer));
- if (!len)
- break;
- if (buffer[len-1] == '\n')
- buffer[--len] = 0;
+ if (!remote_refs) {
+ fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
+ "Perhaps you should specify a branch such as 'master'.\n");
+ return 0;
+ }
- if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
- die("protocol error: expected sha/ref, got '%s'", buffer);
- name = buffer + 41;
- if (nr_match && !path_match(name, nr_match, match))
+ /*
+ * Finally, tell the other end!
+ */
+ new_refs = 0;
+ for (ref = remote_refs; ref; ref = ref->next) {
+ if (!ref->peer_ref && !args->send_mirror)
continue;
- if (read_ref(name, new_sha1) < 0)
- return error("no such local reference '%s'", name);
- if (!has_sha1_file(old_sha1))
- return error("remote '%s' points to object I don't have", name);
- if (!memcmp(old_sha1, new_sha1, 20)) {
- fprintf(stderr, "'%s' unchanged\n", name);
+
+ /* Check for statuses set by set_ref_status_for_push() */
+ switch (ref->status) {
+ case REF_STATUS_REJECT_NONFASTFORWARD:
+ case REF_STATUS_UPTODATE:
continue;
+ default:
+ ; /* do nothing */
+ }
+
+ if (ref->deletion && !allow_deleting_refs) {
+ ref->status = REF_STATUS_REJECT_NODELETE;
+ continue;
+ }
+
+ if (!ref->deletion)
+ new_refs++;
+
+ if (args->dry_run) {
+ ref->status = REF_STATUS_OK;
+ } else {
+ char *old_hex = sha1_to_hex(ref->old_sha1);
+ char *new_hex = sha1_to_hex(ref->new_sha1);
+ int quiet = quiet_supported && (args->quiet || !args->progress);
+
+ if (!cmds_sent && (status_report || use_sideband ||
+ quiet || agent_supported)) {
+ packet_buf_write(&req_buf,
+ "%s %s %s%c%s%s%s%s%s",
+ old_hex, new_hex, ref->name, 0,
+ status_report ? " report-status" : "",
+ use_sideband ? " side-band-64k" : "",
+ quiet ? " quiet" : "",
+ agent_supported ? " agent=" : "",
+ agent_supported ? git_user_agent_sanitized() : ""
+ );
+ }
+ else
+ packet_buf_write(&req_buf, "%s %s %s",
+ old_hex, new_hex, ref->name);
+ ref->status = status_report ?
+ REF_STATUS_EXPECTING_REPORT :
+ REF_STATUS_OK;
+ cmds_sent++;
}
- ref = xmalloc(sizeof(*ref) + len - 40);
- memcpy(ref->old_sha1, old_sha1, 20);
- memcpy(ref->new_sha1, new_sha1, 20);
- memcpy(ref->name, buffer + 41, len - 40);
- ref->next = NULL;
- *last_ref = ref;
- last_ref = &ref->next;
}
- for (ref = ref_list; ref; ref = ref->next) {
- char old_hex[60], *new_hex;
- strcpy(old_hex, sha1_to_hex(ref->old_sha1));
- new_hex = sha1_to_hex(ref->new_sha1);
- packet_write(out, "%s %s %s", old_hex, new_hex, ref->name);
- fprintf(stderr, "'%s': updating from %s to %s\n", ref->name, old_hex, new_hex);
+ if (args->stateless_rpc) {
+ if (!args->dry_run && cmds_sent) {
+ packet_buf_flush(&req_buf);
+ send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
+ }
+ } else {
+ safe_write(out, req_buf.buf, req_buf.len);
+ packet_flush(out);
}
-
- packet_flush(out);
- if (ref_list)
- pack_objects(out, ref_list);
- close(out);
- return 0;
-}
+ strbuf_release(&req_buf);
-int main(int argc, char **argv)
-{
- int i, nr_heads = 0;
- char *dest = NULL;
- char **heads = NULL;
- int fd[2], ret;
- pid_t pid;
-
- argv++;
- for (i = 1; i < argc; i++) {
- char *arg = *argv++;
-
- if (*arg == '-') {
- if (!strncmp(arg, "--exec=", 7)) {
- exec = arg + 7;
- continue;
- }
- usage(send_pack_usage);
+ if (use_sideband && cmds_sent) {
+ memset(&demux, 0, sizeof(demux));
+ demux.proc = sideband_demux;
+ demux.data = fd;
+ demux.out = -1;
+ if (start_async(&demux))
+ die("send-pack: unable to fork off sideband demultiplexer");
+ in = demux.out;
+ }
+
+ if (new_refs && cmds_sent) {
+ if (pack_objects(out, remote_refs, extra_have, args) < 0) {
+ for (ref = remote_refs; ref; ref = ref->next)
+ ref->status = REF_STATUS_NONE;
+ if (args->stateless_rpc)
+ close(out);
+ if (git_connection_is_socket(conn))
+ shutdown(fd[0], SHUT_WR);
+ if (use_sideband)
+ finish_async(&demux);
+ return -1;
}
- dest = arg;
- heads = argv;
- nr_heads = argc - i -1;
- break;
}
- if (!dest)
- usage(send_pack_usage);
- pid = git_connect(fd, dest, exec);
- if (pid < 0)
- return 1;
- ret = send_pack(fd[0], fd[1], nr_heads, heads);
- close(fd[0]);
- close(fd[1]);
- finish_connect(pid);
- return ret;
+ if (args->stateless_rpc && cmds_sent)
+ packet_flush(out);
+
+ if (status_report && cmds_sent)
+ ret = receive_status(in, remote_refs);
+ else
+ ret = 0;
+ if (args->stateless_rpc)
+ packet_flush(out);
+
+ if (use_sideband && cmds_sent) {
+ if (finish_async(&demux)) {
+ error("error in sideband demultiplexer");
+ ret = -1;
+ }
+ close(demux.out);
+ }
+
+ if (ret < 0)
+ return ret;
+
+ if (args->porcelain)
+ return 0;
+
+ for (ref = remote_refs; ref; ref = ref->next) {
+ switch (ref->status) {
+ case REF_STATUS_NONE:
+ case REF_STATUS_UPTODATE:
+ case REF_STATUS_OK:
+ break;
+ default:
+ return -1;
+ }
+ }
+ return 0;
}