gitweb: Secure against commit-ish/tree-ish with the same name as path
[gitweb.git] / builtin-log.c
index f9515a8a4ac8a53e87b6fb9f73e1964350481bfb..fedb0137bc5e3ba50ecb90ce560ce9ce9290d8df 100644 (file)
 #include "revision.h"
 #include "log-tree.h"
 #include "builtin.h"
+#include <time.h>
+#include <sys/time.h>
 
 /* this is in builtin-diff.c */
 void add_head(struct rev_info *revs);
 
-static int cmd_log_wc(int argc, const char **argv, char **envp,
+static void cmd_log_init(int argc, const char **argv, const char *prefix,
                      struct rev_info *rev)
 {
-       struct commit *commit;
-
        rev->abbrev = DEFAULT_ABBREV;
        rev->commit_format = CMIT_FMT_DEFAULT;
        rev->verbose_header = 1;
        argc = setup_revisions(argc, argv, rev, "HEAD");
-       if (rev->always_show_header) {
-               if (rev->diffopt.pickaxe || rev->diffopt.filter) {
-                       rev->always_show_header = 0;
-                       if (rev->diffopt.output_format == DIFF_FORMAT_RAW)
-                               rev->diffopt.output_format = DIFF_FORMAT_NO_OUTPUT;
-               }
-       }
-
+       if (rev->diffopt.pickaxe || rev->diffopt.filter)
+               rev->always_show_header = 0;
        if (argc > 1)
                die("unrecognized argument: %s", argv[1]);
+}
+
+static int cmd_log_walk(struct rev_info *rev)
+{
+       struct commit *commit;
 
        prepare_revision_walk(rev);
-       setup_pager();
        while ((commit = get_revision(rev)) != NULL) {
                log_tree_commit(rev, commit);
                free(commit->buffer);
@@ -46,22 +44,27 @@ static int cmd_log_wc(int argc, const char **argv, char **envp,
        return 0;
 }
 
-int cmd_whatchanged(int argc, const char **argv, char **envp)
+int cmd_whatchanged(int argc, const char **argv, const char *prefix)
 {
        struct rev_info rev;
 
-       init_revisions(&rev);
+       git_config(git_diff_ui_config);
+       init_revisions(&rev, prefix);
        rev.diff = 1;
        rev.diffopt.recursive = 1;
        rev.simplify_history = 0;
-       return cmd_log_wc(argc, argv, envp, &rev);
+       cmd_log_init(argc, argv, prefix, &rev);
+       if (!rev.diffopt.output_format)
+               rev.diffopt.output_format = DIFF_FORMAT_RAW;
+       return cmd_log_walk(&rev);
 }
 
-int cmd_show(int argc, const char **argv, char **envp)
+int cmd_show(int argc, const char **argv, const char *prefix)
 {
        struct rev_info rev;
 
-       init_revisions(&rev);
+       git_config(git_diff_ui_config);
+       init_revisions(&rev, prefix);
        rev.diff = 1;
        rev.diffopt.recursive = 1;
        rev.combine_merges = 1;
@@ -69,17 +72,19 @@ int cmd_show(int argc, const char **argv, char **envp)
        rev.always_show_header = 1;
        rev.ignore_merges = 0;
        rev.no_walk = 1;
-       return cmd_log_wc(argc, argv, envp, &rev);
+       cmd_log_init(argc, argv, prefix, &rev);
+       return cmd_log_walk(&rev);
 }
 
-int cmd_log(int argc, const char **argv, char **envp)
+int cmd_log(int argc, const char **argv, const char *prefix)
 {
        struct rev_info rev;
 
-       init_revisions(&rev);
+       git_config(git_diff_ui_config);
+       init_revisions(&rev, prefix);
        rev.always_show_header = 1;
-       rev.diffopt.recursive = 1;
-       return cmd_log_wc(argc, argv, envp, &rev);
+       cmd_log_init(argc, argv, prefix, &rev);
+       return cmd_log_walk(&rev);
 }
 
 static int istitlechar(char c)
@@ -96,12 +101,15 @@ static int git_format_config(const char *var, const char *value)
        if (!strcmp(var, "format.headers")) {
                int len = strlen(value);
                extra_headers_size += len + 1;
-               extra_headers = realloc(extra_headers, extra_headers_size);
+               extra_headers = xrealloc(extra_headers, extra_headers_size);
                extra_headers[extra_headers_size - len - 1] = 0;
                strcat(extra_headers, value);
                return 0;
        }
-       return git_default_config(var, value);
+       if (!strcmp(var, "diff.color")) {
+               return 0;
+       }
+       return git_diff_ui_config(var, value);
 }
 
 
@@ -163,13 +171,16 @@ static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 static int get_patch_id(struct commit *commit, struct diff_options *options,
                unsigned char *sha1)
 {
-       diff_tree_sha1(commit->parents->item->object.sha1, commit->object.sha1,
-                       "", options);
+       if (commit->parents)
+               diff_tree_sha1(commit->parents->item->object.sha1,
+                              commit->object.sha1, "", options);
+       else
+               diff_root_tree_sha1(commit->object.sha1, "", options);
        diffcore_std(options);
        return diff_flush_patch_id(options, sha1);
 }
 
-static void get_patch_ids(struct rev_info *rev, struct diff_options *options)
+static void get_patch_ids(struct rev_info *rev, struct diff_options *options, const char *prefix)
 {
        struct rev_info check_rev;
        struct commit *commit;
@@ -194,7 +205,7 @@ static void get_patch_ids(struct rev_info *rev, struct diff_options *options)
                die("diff_setup_done failed");
 
        /* given a range a..b get all patch ids for b..a */
-       init_revisions(&check_rev);
+       init_revisions(&check_rev, prefix);
        o1->flags ^= UNINTERESTING;
        o2->flags ^= UNINTERESTING;
        add_pending_object(&check_rev, o1, "o1");
@@ -219,7 +230,19 @@ static void get_patch_ids(struct rev_info *rev, struct diff_options *options)
        o2->flags = flags2;
 }
 
-int cmd_format_patch(int argc, const char **argv, char **envp)
+static void gen_message_id(char *dest, unsigned int length, char *base)
+{
+       const char *committer = git_committer_info(1);
+       const char *email_start = strrchr(committer, '<');
+       const char *email_end = strrchr(committer, '>');
+       if(!email_start || !email_end || email_start > email_end - 1)
+               die("Could not extract email from committer identity.");
+       snprintf(dest, length, "%s.%lu.git.%.*s", base,
+                (unsigned long) time(NULL),
+                (int)(email_end - email_start - 1), email_start + 1);
+}
+
+int cmd_format_patch(int argc, const char **argv, const char *prefix)
 {
        struct commit *commit;
        struct commit **list = NULL;
@@ -230,20 +253,24 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
        int start_number = -1;
        int keep_subject = 0;
        int ignore_if_in_upstream = 0;
+       int thread = 0;
+       const char *in_reply_to = NULL;
        struct diff_options patch_id_opts;
        char *add_signoff = NULL;
+       char message_id[1024];
+       char ref_message_id[1024];
 
-       init_revisions(&rev);
+       setup_ident();
+       git_config(git_format_config);
+       init_revisions(&rev, prefix);
        rev.commit_format = CMIT_FMT_EMAIL;
        rev.verbose_header = 1;
        rev.diff = 1;
-       rev.diffopt.with_raw = 0;
-       rev.diffopt.with_stat = 1;
        rev.combine_merges = 0;
        rev.ignore_merges = 1;
-       rev.diffopt.output_format = DIFF_FORMAT_PATCH;
+       rev.diffopt.msg_sep = "";
+       rev.diffopt.recursive = 1;
 
-       git_config(git_format_config);
        rev.extra_headers = extra_headers;
 
        /*
@@ -283,7 +310,6 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
                         !strcmp(argv[i], "-s")) {
                        const char *committer;
                        const char *endpos;
-                       setup_ident();
                        committer = git_committer_info(1);
                        endpos = strchr(committer, '>');
                        if (!endpos)
@@ -298,6 +324,16 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
                        rev.mime_boundary = argv[i] + 9;
                else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
                        ignore_if_in_upstream = 1;
+               else if (!strcmp(argv[i], "--thread"))
+                       thread = 1;
+               else if (!strncmp(argv[i], "--in-reply-to=", 14))
+                       in_reply_to = argv[i] + 14;
+               else if (!strcmp(argv[i], "--in-reply-to")) {
+                       i++;
+                       if (i == argc)
+                               die("Need a Message-Id for --in-reply-to");
+                       in_reply_to = argv[i];
+               }
                else
                        argv[j++] = argv[i];
        }
@@ -312,6 +348,12 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
        if (argc > 1)
                die ("unrecognized argument: %s", argv[1]);
 
+       if (!rev.diffopt.output_format)
+               rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
+
+       if (!output_directory)
+               output_directory = prefix;
+
        if (output_directory) {
                if (use_stdout)
                        die("standard output, or directory, which one?");
@@ -326,7 +368,7 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
        }
 
        if (ignore_if_in_upstream)
-               get_patch_ids(&rev, &patch_id_opts);
+               get_patch_ids(&rev, &patch_id_opts, prefix);
 
        if (!use_stdout)
                realstdout = fdopen(dup(1), "w");
@@ -345,17 +387,30 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
                        continue;
 
                nr++;
-               list = realloc(list, nr * sizeof(list[0]));
+               list = xrealloc(list, nr * sizeof(list[0]));
                list[nr - 1] = commit;
        }
        total = nr;
        if (numbered)
                rev.total = total + start_number - 1;
        rev.add_signoff = add_signoff;
+       rev.ref_message_id = in_reply_to;
        while (0 <= --nr) {
                int shown;
                commit = list[nr];
                rev.nr = total - nr + (start_number - 1);
+               /* Make the second and subsequent mails replies to the first */
+               if (thread) {
+                       if (nr == (total - 2)) {
+                               strncpy(ref_message_id, message_id,
+                                       sizeof(ref_message_id));
+                               ref_message_id[sizeof(ref_message_id)-1]='\0';
+                               rev.ref_message_id = ref_message_id;
+                       }
+                       gen_message_id(message_id, sizeof(message_id),
+                                      sha1_to_hex(commit->object.sha1));
+                       rev.message_id = message_id;
+               }
                if (!use_stdout)
                        reopen_stdout(commit, rev.nr, keep_subject);
                shown = log_tree_commit(&rev, commit);
@@ -385,3 +440,109 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
        return 0;
 }
 
+static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
+{
+       unsigned char sha1[20];
+       if (get_sha1(arg, sha1) == 0) {
+               struct commit *commit = lookup_commit_reference(sha1);
+               if (commit) {
+                       commit->object.flags |= flags;
+                       add_pending_object(revs, &commit->object, arg);
+                       return 0;
+               }
+       }
+       return -1;
+}
+
+static const char cherry_usage[] =
+"git-cherry [-v] <upstream> [<head>] [<limit>]";
+int cmd_cherry(int argc, const char **argv, const char *prefix)
+{
+       struct rev_info revs;
+       struct diff_options patch_id_opts;
+       struct commit *commit;
+       struct commit_list *list = NULL;
+       const char *upstream;
+       const char *head = "HEAD";
+       const char *limit = NULL;
+       int verbose = 0;
+
+       if (argc > 1 && !strcmp(argv[1], "-v")) {
+               verbose = 1;
+               argc--;
+               argv++;
+       }
+
+       switch (argc) {
+       case 4:
+               limit = argv[3];
+               /* FALLTHROUGH */
+       case 3:
+               head = argv[2];
+               /* FALLTHROUGH */
+       case 2:
+               upstream = argv[1];
+               break;
+       default:
+               usage(cherry_usage);
+       }
+
+       init_revisions(&revs, prefix);
+       revs.diff = 1;
+       revs.combine_merges = 0;
+       revs.ignore_merges = 1;
+       revs.diffopt.recursive = 1;
+
+       if (add_pending_commit(head, &revs, 0))
+               die("Unknown commit %s", head);
+       if (add_pending_commit(upstream, &revs, UNINTERESTING))
+               die("Unknown commit %s", upstream);
+
+       /* Don't say anything if head and upstream are the same. */
+       if (revs.pending.nr == 2) {
+               struct object_array_entry *o = revs.pending.objects;
+               if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
+                       return 0;
+       }
+
+       get_patch_ids(&revs, &patch_id_opts, prefix);
+
+       if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
+               die("Unknown commit %s", limit);
+
+       /* reverse the list of commits */
+       prepare_revision_walk(&revs);
+       while ((commit = get_revision(&revs)) != NULL) {
+               /* ignore merges */
+               if (commit->parents && commit->parents->next)
+                       continue;
+
+               commit_list_insert(commit, &list);
+       }
+
+       while (list) {
+               unsigned char sha1[20];
+               char sign = '+';
+
+               commit = list->item;
+               if (!get_patch_id(commit, &patch_id_opts, sha1) &&
+                   lookup_object(sha1))
+                       sign = '-';
+
+               if (verbose) {
+                       static char buf[16384];
+                       pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
+                                           buf, sizeof(buf), 0, NULL, NULL, 0);
+                       printf("%c %s %s\n", sign,
+                              sha1_to_hex(commit->object.sha1), buf);
+               }
+               else {
+                       printf("%c %s\n", sign,
+                              sha1_to_hex(commit->object.sha1));
+               }
+
+               list = list->next;
+       }
+
+       return 0;
+}