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/* ui-atom.c: functions for atom feeds
 *
 * Copyright (C) 2008 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include "html.h"
#include "ui-shared.h"

void add_entry(struct commit *commit, char *host)
{
	char delim = '&';
	char *hex;
	char *mail, *t, *t2;
	struct commitinfo *info;

	info = cgit_parse_commit(commit);
	hex = sha1_to_hex(commit->object.sha1);
	html("<entry>\n");
	html("<title>");
	html_txt(info->subject);
	html("</title>\n");
	html("<updated>");
	cgit_print_date(info->author_date, FMT_ATOMDATE, ctx.cfg.local_time);
	html("</updated>\n");
	html("<author>\n");
	if (info->author) {
		html("<name>");
		html_txt(info->author);
		html("</name>\n");
	}
	if (info->author_email) {
		mail = xstrdup(info->author_email);
		t = strchr(mail, '<');
		if (t)
			t++;
		else
			t = mail;
		t2 = strchr(t, '>');
		if (t2)
			*t2 = '\0';
		html("<email>");
		html_txt(t);
		html("</email>\n");
		free(mail);
	}
	html("</author>\n");
	html("<published>");
	cgit_print_date(info->author_date, FMT_ATOMDATE, ctx.cfg.local_time);
	html("</published>\n");
	if (host) {
		html("<link rel='alternate' type='text/html' href='");
		html(cgit_httpscheme());
		html_attr(host);
		html_attr(cgit_pageurl(ctx.repo->url, "commit", NULL));
		if (ctx.cfg.virtual_root)
			delim = '?';
		htmlf("%cid=%s", delim, hex);
		html("'/>\n");
	}
	htmlf("<id>%s</id>\n", hex);
	html("<content type='text'>\n");
	html_txt(info->msg);
	html("</content>\n");
	html("<content type='xhtml'>\n");
	html("<div xmlns='http://www.w3.org/1999/xhtml'>\n");
	html("<pre>\n");
	html_txt(info->msg);
	html("</pre>\n");
	html("</div>\n");
	html("</content>\n");
	html("</entry>\n");
	cgit_free_commitinfo(info);
}


void cgit_print_atom(char *tip, char *path, int max_count)
{
	char *host;
	const char *argv[] = {NULL, tip, NULL, NULL, NULL};
	struct commit *commit;
	struct rev_info rev;
	int argc = 2;

	if (!tip)
		argv[1] = ctx.qry.head;

	if (path) {
		argv[argc++] = "--";
		argv[argc++] = path;
	}

	init_revisions(&rev, NULL);
	rev.abbrev = DEFAULT_ABBREV;
	rev.commit_format = CMIT_FMT_DEFAULT;
	rev.verbose_header = 1;
	rev.show_root_diff = 0;
	rev.max_count = max_count;
	setup_revisions(argc, argv, &rev, NULL);
	prepare_revision_walk(&rev);

	host = cgit_hosturl();
	ctx.page.mimetype = "text/xml";
	ctx.page.charset = "utf-8";
	cgit_print_http_headers(&ctx);
	html("<feed xmlns='http://www.w3.org/2005/Atom'>\n");
	html("<title>");
	html_txt(ctx.repo->name);
	html("</title>\n");
	html("<subtitle>");
	html_txt(ctx.repo->desc);
	html("</subtitle>\n");
	if (host) {
		html("<link rel='alternate' type='text/html' href='");
		html(cgit_httpscheme());
		html_attr(host);
		html_attr(cgit_repourl(ctx.repo->url));
		html("'/>\n");
	}
	while ((commit = get_revision(&rev)) != NULL) {
		add_entry(commit, host);
		free(commit->buffer);
		commit->buffer = NULL;
		free_commit_list(commit->parents);
		commit->parents = NULL;
	}
	html("</feed>\n");
}
itinfo(struct commitinfo *info) { free(info->author); free(info->author_email); free(info->committer); free(info->committer_email); free(info->subject); free(info->msg); free(info->msg_encoding); free(info); return NULL; } char *trim_end(const char *str, char c) { int len; char *s, *t; if (str == NULL) return NULL; t = (char *)str; len = strlen(t); while(len > 0 && t[len - 1] == c) len--; if (len == 0) return NULL; c = t[len]; t[len] = '\0'; s = xstrdup(t); t[len] = c; return s; } char *strlpart(char *txt, int maxlen) { char *result; if (!txt) return txt; if (strlen(txt) <= maxlen) return txt; result = xmalloc(maxlen + 1); memcpy(result, txt, maxlen - 3); result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.'; result[maxlen] = '\0'; return result; } char *strrpart(char *txt, int maxlen) { char *result; if (!txt) return txt; if (strlen(txt) <= maxlen) return txt; result = xmalloc(maxlen + 1); memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3); result[0] = result[1] = result[2] = '.'; return result; } void cgit_add_ref(struct reflist *list, struct refinfo *ref) { size_t size; if (list->count >= list->alloc) { list->alloc += (list->alloc ? list->alloc : 4); size = list->alloc * sizeof(struct refinfo *); list->refs = xrealloc(list->refs, size); } list->refs[list->count++] = ref; } struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1) { struct refinfo *ref; ref = xmalloc(sizeof (struct refinfo)); ref->refname = xstrdup(refname); ref->object = parse_object(sha1); switch (ref->object->type) { case OBJ_TAG: ref->tag = cgit_parse_tag((struct tag *)ref->object); break; case OBJ_COMMIT: ref->commit = cgit_parse_commit((struct commit *)ref->object); break; } return ref; } int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags, void *cb_data) { struct reflist *list = (struct reflist *)cb_data; struct refinfo *info = cgit_mk_refinfo(refname, sha1); if (info) cgit_add_ref(list, info); return 0; } void cgit_diff_tree_cb(struct diff_queue_struct *q, struct diff_options *options, void *data) { int i; for (i = 0; i < q->nr; i++) { if (q->queue[i]->status == 'U') continue; ((filepair_fn)data)(q->queue[i]); } } static int load_mmfile(mmfile_t *file, const unsigned char *sha1) { enum object_type type; if (is_null_sha1(sha1)) { file->ptr = (char *)""; file->size = 0; } else { file->ptr = read_sha1_file(sha1, &type, (unsigned long *)&file->size); } return 1; } /* * Receive diff-buffers from xdiff and concatenate them as * needed across multiple callbacks. * * This is basically a copy of xdiff-interface.c/xdiff_outf(), * ripped from git and modified to use globals instead of * a special callback-struct. */ char *diffbuf = NULL; int buflen = 0; int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf) { int i; for (i = 0; i < nbuf; i++) { if (mb[i].ptr[mb[i].size-1] != '\n') { /* Incomplete line */ diffbuf = xrealloc(diffbuf, buflen + mb[i].size); memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size); buflen += mb[i].size; continue; } /* we have a complete line */ if (!diffbuf) { ((linediff_fn)priv)(mb[i].ptr, mb[i].size); continue; } diffbuf = xrealloc(diffbuf, buflen + mb[i].size); memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size); ((linediff_fn)priv)(diffbuf, buflen + mb[i].size); free(diffbuf); diffbuf = NULL; buflen = 0; } if (diffbuf) { ((linediff_fn)priv)(diffbuf, buflen); free(diffbuf); diffbuf = NULL; buflen = 0; } return 0; } int cgit_diff_files(const unsigned char *old_sha1, const unsigned char *new_sha1, unsigned long *old_size, unsigned long *new_size, int *binary, linediff_fn fn) { mmfile_t file1, file2; xpparam_t diff_params; xdemitconf_t emit_params; xdemitcb_t emit_cb; if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1)) return 1; *old_size = file1.size; *new_size = file2.size; if ((file1.ptr && buffer_is_binary(file1.ptr, file1.size)) || (file2.ptr && buffer_is_binary(file2.ptr, file2.size))) { *binary = 1; return 0; } memset(&diff_params, 0, sizeof(diff_params)); memset(&emit_params, 0, sizeof(emit_params)); memset(&emit_cb, 0, sizeof(emit_cb)); diff_params.flags = XDF_NEED_MINIMAL; emit_params.ctxlen = 3; emit_params.flags = XDL_EMIT_FUNCNAMES; emit_cb.outf = filediff_cb; emit_cb.priv = fn; xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb); return 0; } void cgit_diff_tree(const unsigned char *old_sha1, const unsigned char *new_sha1, filepair_fn fn, const char *prefix) { struct diff_options opt; int ret; int prefixlen; diff_setup(&opt); opt.output_format = DIFF_FORMAT_CALLBACK; opt.detect_rename = 1; opt.rename_limit = ctx.cfg.renamelimit; DIFF_OPT_SET(&opt, RECURSIVE); opt.format_callback = cgit_diff_tree_cb; opt.format_callback_data = fn; if (prefix) { opt.nr_paths = 1; opt.paths = &prefix; prefixlen = strlen(prefix); opt.pathlens = &prefixlen; } diff_setup_done(&opt); if (old_sha1 && !is_null_sha1(old_sha1)) ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt); else ret = diff_root_tree_sha1(new_sha1, "", &opt); diffcore_std(&opt); diff_flush(&opt); } void cgit_diff_commit(struct commit *commit, filepair_fn fn) { unsigned char *old_sha1 = NULL; if (commit->parents) old_sha1 = commit->parents->item->object.sha1; cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL); } int cgit_parse_snapshots_mask(const char *str) { const struct cgit_snapshot_format *f; static const char *delim = " \t,:/|;"; int tl, sl, rv = 0; /* favor legacy setting */ if(atoi(str)) return 1; for(;;) { str += strspn(str,delim); tl = strcspn(str,delim); if (!tl) break; for (f = cgit_snapshot_formats; f->suffix; f++) { sl = strlen(f->suffix); if((tl == sl && !strncmp(f->suffix, str, tl)) || (tl == sl-1 && !strncmp(f->suffix+1, str, tl-1))) { rv |= f->bit; break; } } str += tl; } return rv; } int cgit_open_filter(struct cgit_filter *filter) { filter->old_stdout = chk_positive(dup(STDOUT_FILENO), "Unable to duplicate STDOUT"); chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess"); filter->pid = chk_non_negative(fork(), "Unable to create subprocess"); if (filter->pid == 0) { close(filter->pipe_fh[1]); chk_non_negative(dup2(filter->pipe_fh[0], STDIN_FILENO), "Unable to use pipe as STDIN"); execvp(filter->cmd, filter->argv); die("Unable to exec subprocess %s: %s (%d)", filter->cmd, strerror(errno), errno); } close(filter->pipe_fh[0]); chk_non_negative(dup2(filter->pipe_fh[1], STDOUT_FILENO), "Unable to use pipe as STDOUT"); close(filter->pipe_fh[1]); return 0; } int cgit_close_filter(struct cgit_filter *filter) { chk_non_negative(dup2(filter->old_stdout, STDOUT_FILENO), "Unable to restore STDOUT"); close(filter->old_stdout); if (filter->pid < 0) return 0; waitpid(filter->pid, &filter->exitstatus, 0); if (WIFEXITED(filter->exitstatus) && !WEXITSTATUS(filter->exitstatus)) return 0; die("Subprocess %s exited abnormally", filter->cmd); } /* Read the content of the specified file into a newly allocated buffer, * zeroterminate the buffer and return 0 on success, errno otherwise. */ int readfile(const char *path, char **buf, size_t *size) { int fd; struct stat st; fd = open(path, O_RDONLY); if (fd == -1) return errno; if (fstat(fd, &st)) return errno; if (!S_ISREG(st.st_mode)) return EISDIR; *buf = xmalloc(st.st_size + 1); *size = read_in_full(fd, *buf, st.st_size); (*buf)[*size] = '\0'; return (*size == st.st_size ? 0 : errno); }