]> git.ipfire.org Git - thirdparty/git.git/blobdiff - builtin-receive-pack.c
fast-import: introduce "feature notes" command
[thirdparty/git.git] / builtin-receive-pack.c
index 4320c93e700a08911e42e3e949656af67b675244..0559fcc871894548050e99c8c258561a0dcad5c9 100644 (file)
@@ -2,6 +2,7 @@
 #include "pack.h"
 #include "refs.h"
 #include "pkt-line.h"
+#include "sideband.h"
 #include "run-command.h"
 #include "exec_cmd.h"
 #include "commit.h"
@@ -27,11 +28,12 @@ static int receive_unpack_limit = -1;
 static int transfer_unpack_limit = -1;
 static int unpack_limit = 100;
 static int report_status;
+static int use_sideband;
 static int prefer_ofs_delta = 1;
 static int auto_update_server_info;
 static int auto_gc = 1;
 static const char *head_name;
-static char *capabilities_to_send;
+static int sent_capabilities;
 
 static enum deny_action parse_deny_action(const char *var, const char *value)
 {
@@ -105,19 +107,21 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
 
 static int show_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
 {
-       if (!capabilities_to_send)
+       if (sent_capabilities)
                packet_write(1, "%s %s\n", sha1_to_hex(sha1), path);
        else
-               packet_write(1, "%s %s%c%s\n",
-                            sha1_to_hex(sha1), path, 0, capabilities_to_send);
-       capabilities_to_send = NULL;
+               packet_write(1, "%s %s%c%s%s\n",
+                            sha1_to_hex(sha1), path, 0,
+                            " report-status delete-refs side-band-64k",
+                            prefer_ofs_delta ? " ofs-delta" : "");
+       sent_capabilities = 1;
        return 0;
 }
 
 static void write_head_info(void)
 {
        for_each_ref(show_ref, NULL);
-       if (capabilities_to_send)
+       if (!sent_capabilities)
                show_ref("capabilities^{}", null_sha1, 0, NULL);
 
 }
@@ -135,11 +139,61 @@ static struct command *commands;
 static const char pre_receive_hook[] = "hooks/pre-receive";
 static const char post_receive_hook[] = "hooks/post-receive";
 
+static void rp_error(const char *err, ...) __attribute__((format (printf, 1, 2)));
+static void rp_warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
+
+static void report_message(const char *prefix, const char *err, va_list params)
+{
+       int sz = strlen(prefix);
+       char msg[4096];
+
+       strncpy(msg, prefix, sz);
+       sz += vsnprintf(msg + sz, sizeof(msg) - sz, err, params);
+       if (sz > (sizeof(msg) - 1))
+               sz = sizeof(msg) - 1;
+       msg[sz++] = '\n';
+
+       if (use_sideband)
+               send_sideband(1, 2, msg, sz, use_sideband);
+       else
+               xwrite(2, msg, sz);
+}
+
+static void rp_warning(const char *err, ...)
+{
+       va_list params;
+       va_start(params, err);
+       report_message("warning: ", err, params);
+       va_end(params);
+}
+
+static void rp_error(const char *err, ...)
+{
+       va_list params;
+       va_start(params, err);
+       report_message("error: ", err, params);
+       va_end(params);
+}
+
+static int copy_to_sideband(int in, int out, void *arg)
+{
+       char data[128];
+       while (1) {
+               ssize_t sz = xread(in, data, sizeof(data));
+               if (sz <= 0)
+                       break;
+               send_sideband(1, 2, data, sz, use_sideband);
+       }
+       close(in);
+       return 0;
+}
+
 static int run_receive_hook(const char *hook_name)
 {
        static char buf[sizeof(commands->old_sha1) * 2 + PATH_MAX + 4];
        struct command *cmd;
        struct child_process proc;
+       struct async muxer;
        const char *argv[2];
        int have_input = 0, code;
 
@@ -159,9 +213,23 @@ static int run_receive_hook(const char *hook_name)
        proc.in = -1;
        proc.stdout_to_stderr = 1;
 
+       if (use_sideband) {
+               memset(&muxer, 0, sizeof(muxer));
+               muxer.proc = copy_to_sideband;
+               muxer.in = -1;
+               code = start_async(&muxer);
+               if (code)
+                       return code;
+               proc.err = muxer.in;
+       }
+
        code = start_command(&proc);
-       if (code)
+       if (code) {
+               if (use_sideband)
+                       finish_async(&muxer);
                return code;
+       }
+
        for (cmd = commands; cmd; cmd = cmd->next) {
                if (!cmd->error_string) {
                        size_t n = snprintf(buf, sizeof(buf), "%s %s %s\n",
@@ -173,6 +241,8 @@ static int run_receive_hook(const char *hook_name)
                }
        }
        close(proc.in);
+       if (use_sideband)
+               finish_async(&muxer);
        return finish_command(&proc);
 }
 
@@ -180,6 +250,8 @@ static int run_update_hook(struct command *cmd)
 {
        static const char update_hook[] = "hooks/update";
        const char *argv[5];
+       struct child_process proc;
+       int code;
 
        if (access(update_hook, X_OK) < 0)
                return 0;
@@ -190,8 +262,18 @@ static int run_update_hook(struct command *cmd)
        argv[3] = sha1_to_hex(cmd->new_sha1);
        argv[4] = NULL;
 
-       return run_command_v_opt(argv, RUN_COMMAND_NO_STDIN |
-                                       RUN_COMMAND_STDOUT_TO_STDERR);
+       memset(&proc, 0, sizeof(proc));
+       proc.no_stdin = 1;
+       proc.stdout_to_stderr = 1;
+       proc.err = use_sideband ? -1 : 0;
+       proc.argv = argv;
+
+       code = start_command(&proc);
+       if (code)
+               return code;
+       if (use_sideband)
+               copy_to_sideband(proc.err, -1, NULL);
+       return finish_command(&proc);
 }
 
 static int is_ref_checked_out(const char *ref)
@@ -224,7 +306,7 @@ static void refuse_unconfigured_deny(void)
 {
        int i;
        for (i = 0; i < ARRAY_SIZE(refuse_unconfigured_deny_msg); i++)
-               error("%s", refuse_unconfigured_deny_msg[i]);
+               rp_error("%s", refuse_unconfigured_deny_msg[i]);
 }
 
 static char *refuse_unconfigured_deny_delete_current_msg[] = {
@@ -244,7 +326,7 @@ static void refuse_unconfigured_deny_delete_current(void)
        for (i = 0;
             i < ARRAY_SIZE(refuse_unconfigured_deny_delete_current_msg);
             i++)
-               error("%s", refuse_unconfigured_deny_delete_current_msg[i]);
+               rp_error("%s", refuse_unconfigured_deny_delete_current_msg[i]);
 }
 
 static const char *update(struct command *cmd)
@@ -256,7 +338,7 @@ static const char *update(struct command *cmd)
 
        /* only refs/... are allowed */
        if (prefixcmp(name, "refs/") || check_ref_format(name + 5)) {
-               error("refusing to create funny ref '%s' remotely", name);
+               rp_error("refusing to create funny ref '%s' remotely", name);
                return "funny refname";
        }
 
@@ -265,11 +347,11 @@ static const char *update(struct command *cmd)
                case DENY_IGNORE:
                        break;
                case DENY_WARN:
-                       warning("updating the current branch");
+                       rp_warning("updating the current branch");
                        break;
                case DENY_REFUSE:
                case DENY_UNCONFIGURED:
-                       error("refusing to update checked out branch: %s", name);
+                       rp_error("refusing to update checked out branch: %s", name);
                        if (deny_current_branch == DENY_UNCONFIGURED)
                                refuse_unconfigured_deny();
                        return "branch is currently checked out";
@@ -284,7 +366,7 @@ static const char *update(struct command *cmd)
 
        if (!is_null_sha1(old_sha1) && is_null_sha1(new_sha1)) {
                if (deny_deletes && !prefixcmp(name, "refs/heads/")) {
-                       error("denying ref deletion for %s", name);
+                       rp_error("denying ref deletion for %s", name);
                        return "deletion prohibited";
                }
 
@@ -293,13 +375,13 @@ static const char *update(struct command *cmd)
                        case DENY_IGNORE:
                                break;
                        case DENY_WARN:
-                               warning("deleting the current branch");
+                               rp_warning("deleting the current branch");
                                break;
                        case DENY_REFUSE:
                        case DENY_UNCONFIGURED:
                                if (deny_delete_current == DENY_UNCONFIGURED)
                                        refuse_unconfigured_deny_delete_current();
-                               error("refusing to delete the current branch: %s", name);
+                               rp_error("refusing to delete the current branch: %s", name);
                                return "deletion of the current branch prohibited";
                        }
                }
@@ -329,23 +411,23 @@ static const char *update(struct command *cmd)
                                break;
                free_commit_list(bases);
                if (!ent) {
-                       error("denying non-fast-forward %s"
-                             " (you should pull first)", name);
+                       rp_error("denying non-fast-forward %s"
+                                " (you should pull first)", name);
                        return "non-fast-forward";
                }
        }
        if (run_update_hook(cmd)) {
-               error("hook declined to update %s", name);
+               rp_error("hook declined to update %s", name);
                return "hook declined";
        }
 
        if (is_null_sha1(new_sha1)) {
                if (!parse_object(old_sha1)) {
-                       warning ("Allowing deletion of corrupt ref.");
+                       rp_warning("Allowing deletion of corrupt ref.");
                        old_sha1 = NULL;
                }
                if (delete_ref(name, old_sha1, 0)) {
-                       error("failed to delete %s", name);
+                       rp_error("failed to delete %s", name);
                        return "failed to delete";
                }
                return NULL; /* good */
@@ -353,7 +435,7 @@ static const char *update(struct command *cmd)
        else {
                lock = lock_any_ref_for_update(name, old_sha1, 0);
                if (!lock) {
-                       error("failed to lock %s", name);
+                       rp_error("failed to lock %s", name);
                        return "failed to lock";
                }
                if (write_ref_sha1(lock, new_sha1, "push")) {
@@ -368,8 +450,9 @@ static char update_post_hook[] = "hooks/post-update";
 static void run_update_post_hook(struct command *cmd)
 {
        struct command *cmd_p;
-       int argc, status;
+       int argc;
        const char **argv;
+       struct child_process proc;
 
        for (argc = 0, cmd_p = cmd; cmd_p; cmd_p = cmd_p->next) {
                if (cmd_p->error_string)
@@ -391,8 +474,18 @@ static void run_update_post_hook(struct command *cmd)
                argc++;
        }
        argv[argc] = NULL;
-       status = run_command_v_opt(argv, RUN_COMMAND_NO_STDIN
-                       | RUN_COMMAND_STDOUT_TO_STDERR);
+
+       memset(&proc, 0, sizeof(proc));
+       proc.no_stdin = 1;
+       proc.stdout_to_stderr = 1;
+       proc.err = use_sideband ? -1 : 0;
+       proc.argv = argv;
+
+       if (!start_command(&proc)) {
+               if (use_sideband)
+                       copy_to_sideband(proc.err, -1, NULL);
+               finish_command(&proc);
+       }
 }
 
 static void execute_commands(const char *unpacker_error)
@@ -452,6 +545,8 @@ static void read_head_info(void)
                if (reflen + 82 < len) {
                        if (strstr(refname + reflen + 1, "report-status"))
                                report_status = 1;
+                       if (strstr(refname + reflen + 1, "side-band-64k"))
+                               use_sideband = LARGE_PACKET_MAX;
                }
                cmd = xmalloc(sizeof(struct command) + len - 80);
                hashcpy(cmd->old_sha1, old_sha1);
@@ -551,17 +646,25 @@ static const char *unpack(void)
 static void report(const char *unpack_status)
 {
        struct command *cmd;
-       packet_write(1, "unpack %s\n",
-                    unpack_status ? unpack_status : "ok");
+       struct strbuf buf = STRBUF_INIT;
+
+       packet_buf_write(&buf, "unpack %s\n",
+                        unpack_status ? unpack_status : "ok");
        for (cmd = commands; cmd; cmd = cmd->next) {
                if (!cmd->error_string)
-                       packet_write(1, "ok %s\n",
-                                    cmd->ref_name);
+                       packet_buf_write(&buf, "ok %s\n",
+                                        cmd->ref_name);
                else
-                       packet_write(1, "ng %s %s\n",
-                                    cmd->ref_name, cmd->error_string);
+                       packet_buf_write(&buf, "ng %s %s\n",
+                                        cmd->ref_name, cmd->error_string);
        }
-       packet_flush(1);
+       packet_buf_flush(&buf);
+
+       if (use_sideband)
+               send_sideband(1, 1, buf.buf, buf.len, use_sideband);
+       else
+               safe_write(1, buf.buf, buf.len);
+       strbuf_release(&buf);
 }
 
 static int delete_only(struct command *cmd)
@@ -658,10 +761,6 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
        else if (0 <= receive_unpack_limit)
                unpack_limit = receive_unpack_limit;
 
-       capabilities_to_send = (prefer_ofs_delta) ?
-               " report-status delete-refs ofs-delta " :
-               " report-status delete-refs ";
-
        if (advertise_refs || !stateless_rpc) {
                add_alternate_refs();
                write_head_info();
@@ -695,5 +794,7 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
                if (auto_update_server_info)
                        update_server_info(0);
        }
+       if (use_sideband)
+               packet_flush(1);
        return 0;
 }