git-checkout-index$X git-clone-pack$X \
git-convert-objects$X git-fetch-pack$X git-fsck-objects$X \
git-hash-object$X git-index-pack$X git-local-fetch$X \
- git-mailinfo$X git-merge-base$X \
+ git-merge-base$X \
git-merge-index$X git-mktag$X git-mktree$X git-pack-objects$X git-patch-id$X \
git-peek-remote$X git-prune-packed$X git-receive-pack$X \
git-send-pack$X git-shell$X \
BUILT_INS = git-log$X git-whatchanged$X git-show$X \
git-count-objects$X git-diff$X git-push$X git-mailsplit$X \
git-grep$X git-add$X git-rm$X git-rev-list$X \
- git-check-ref-format$X git-rev-parse$X \
+ git-check-ref-format$X git-rev-parse$X git-mailinfo$X \
git-init-db$X git-tar-tree$X git-upload-tar$X git-format-patch$X \
git-ls-files$X git-ls-tree$X git-get-tar-commit-id$X \
git-read-tree$X git-commit-tree$X git-write-tree$X \
builtin-rm.o builtin-init-db.o builtin-rev-parse.o \
builtin-tar-tree.o builtin-upload-tar.o \
builtin-ls-files.o builtin-ls-tree.o builtin-write-tree.o \
- builtin-read-tree.o builtin-commit-tree.o \
+ builtin-read-tree.o builtin-commit-tree.o builtin-mailinfo.o \
builtin-apply.o builtin-show-branch.o builtin-diff-files.o \
builtin-diff-index.o builtin-diff-stages.o builtin-diff-tree.o \
builtin-cat-file.o builtin-mailsplit.o
else
ICONV_LINK =
endif
- LIB_4_ICONV = $(ICONV_LINK) -liconv
-else
- LIB_4_ICONV =
+ LIBS += $(ICONV_LINK) -liconv
endif
ifdef NEEDS_SOCKET
LIBS += -lsocket
$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIB_FILE) $(SIMPLE_LIB)
-git-mailinfo$X: mailinfo.o $(LIB_FILE)
- $(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
- $(LIB_FILE) $(SIMPLE_LIB) $(LIB_4_ICONV)
-
git-local-fetch$X: fetch.o
git-ssh-fetch$X: rsh.o fetch.o
git-ssh-upload$X: rsh.o
--- /dev/null
+/*
+ * Another stupid program, this one parsing the headers of an
+ * email to figure out authorship and subject
+ */
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#ifndef NO_ICONV
+#include <iconv.h>
+#endif
+#include "git-compat-util.h"
+#include "cache.h"
+#include "builtin.h"
+
+static FILE *cmitmsg, *patchfile, *fin, *fout;
+
+static int keep_subject = 0;
+static const char *metainfo_charset = NULL;
+static char line[1000];
+static char date[1000];
+static char name[1000];
+static char email[1000];
+static char subject[1000];
+
+static enum {
+ TE_DONTCARE, TE_QP, TE_BASE64,
+} transfer_encoding;
+static char charset[256];
+
+static char multipart_boundary[1000];
+static int multipart_boundary_len;
+static int patch_lines = 0;
+
+static char *sanity_check(char *name, char *email)
+{
+ int len = strlen(name);
+ if (len < 3 || len > 60)
+ return email;
+ if (strchr(name, '@') || strchr(name, '<') || strchr(name, '>'))
+ return email;
+ return name;
+}
+
+static int bogus_from(char *line)
+{
+ /* John Doe <johndoe> */
+ char *bra, *ket, *dst, *cp;
+
+ /* This is fallback, so do not bother if we already have an
+ * e-mail address.
+ */
+ if (*email)
+ return 0;
+
+ bra = strchr(line, '<');
+ if (!bra)
+ return 0;
+ ket = strchr(bra, '>');
+ if (!ket)
+ return 0;
+
+ for (dst = email, cp = bra+1; cp < ket; )
+ *dst++ = *cp++;
+ *dst = 0;
+ for (cp = line; isspace(*cp); cp++)
+ ;
+ for (bra--; isspace(*bra); bra--)
+ *bra = 0;
+ cp = sanity_check(cp, email);
+ strcpy(name, cp);
+ return 1;
+}
+
+static int handle_from(char *in_line)
+{
+ char line[1000];
+ char *at;
+ char *dst;
+
+ strcpy(line, in_line);
+ at = strchr(line, '@');
+ if (!at)
+ return bogus_from(line);
+
+ /*
+ * If we already have one email, don't take any confusing lines
+ */
+ if (*email && strchr(at+1, '@'))
+ return 0;
+
+ /* Pick up the string around '@', possibly delimited with <>
+ * pair; that is the email part. White them out while copying.
+ */
+ while (at > line) {
+ char c = at[-1];
+ if (isspace(c))
+ break;
+ if (c == '<') {
+ at[-1] = ' ';
+ break;
+ }
+ at--;
+ }
+ dst = email;
+ for (;;) {
+ unsigned char c = *at;
+ if (!c || c == '>' || isspace(c)) {
+ if (c == '>')
+ *at = ' ';
+ break;
+ }
+ *at++ = ' ';
+ *dst++ = c;
+ }
+ *dst++ = 0;
+
+ /* The remainder is name. It could be "John Doe <john.doe@xz>"
+ * or "john.doe@xz (John Doe)", but we have whited out the
+ * email part, so trim from both ends, possibly removing
+ * the () pair at the end.
+ */
+ at = line + strlen(line);
+ while (at > line) {
+ unsigned char c = *--at;
+ if (!isspace(c)) {
+ at[(c == ')') ? 0 : 1] = 0;
+ break;
+ }
+ }
+
+ at = line;
+ for (;;) {
+ unsigned char c = *at;
+ if (!c || !isspace(c)) {
+ if (c == '(')
+ at++;
+ break;
+ }
+ at++;
+ }
+ at = sanity_check(at, email);
+ strcpy(name, at);
+ return 1;
+}
+
+static int handle_date(char *line)
+{
+ strcpy(date, line);
+ return 0;
+}
+
+static int handle_subject(char *line)
+{
+ strcpy(subject, line);
+ return 0;
+}
+
+/* NOTE NOTE NOTE. We do not claim we do full MIME. We just attempt
+ * to have enough heuristics to grok MIME encoded patches often found
+ * on our mailing lists. For example, we do not even treat header lines
+ * case insensitively.
+ */
+
+static int slurp_attr(const char *line, const char *name, char *attr)
+{
+ char *ends, *ap = strcasestr(line, name);
+ size_t sz;
+
+ if (!ap) {
+ *attr = 0;
+ return 0;
+ }
+ ap += strlen(name);
+ if (*ap == '"') {
+ ap++;
+ ends = "\"";
+ }
+ else
+ ends = "; \t";
+ sz = strcspn(ap, ends);
+ memcpy(attr, ap, sz);
+ attr[sz] = 0;
+ return 1;
+}
+
+static int handle_subcontent_type(char *line)
+{
+ /* We do not want to mess with boundary. Note that we do not
+ * handle nested multipart.
+ */
+ if (strcasestr(line, "boundary=")) {
+ fprintf(stderr, "Not handling nested multipart message.\n");
+ exit(1);
+ }
+ slurp_attr(line, "charset=", charset);
+ if (*charset) {
+ int i, c;
+ for (i = 0; (c = charset[i]) != 0; i++)
+ charset[i] = tolower(c);
+ }
+ return 0;
+}
+
+static int handle_content_type(char *line)
+{
+ *multipart_boundary = 0;
+ if (slurp_attr(line, "boundary=", multipart_boundary + 2)) {
+ memcpy(multipart_boundary, "--", 2);
+ multipart_boundary_len = strlen(multipart_boundary);
+ }
+ slurp_attr(line, "charset=", charset);
+ return 0;
+}
+
+static int handle_content_transfer_encoding(char *line)
+{
+ if (strcasestr(line, "base64"))
+ transfer_encoding = TE_BASE64;
+ else if (strcasestr(line, "quoted-printable"))
+ transfer_encoding = TE_QP;
+ else
+ transfer_encoding = TE_DONTCARE;
+ return 0;
+}
+
+static int is_multipart_boundary(const char *line)
+{
+ return (!memcmp(line, multipart_boundary, multipart_boundary_len));
+}
+
+static int eatspace(char *line)
+{
+ int len = strlen(line);
+ while (len > 0 && isspace(line[len-1]))
+ line[--len] = 0;
+ return len;
+}
+
+#define SEEN_FROM 01
+#define SEEN_DATE 02
+#define SEEN_SUBJECT 04
+#define SEEN_BOGUS_UNIX_FROM 010
+#define SEEN_PREFIX 020
+
+/* First lines of body can have From:, Date:, and Subject: or empty */
+static void handle_inbody_header(int *seen, char *line)
+{
+ if (*seen & SEEN_PREFIX)
+ return;
+ if (isspace(*line)) {
+ char *cp;
+ for (cp = line + 1; *cp; cp++) {
+ if (!isspace(*cp))
+ break;
+ }
+ if (!*cp)
+ return;
+ }
+ if (!memcmp(">From", line, 5) && isspace(line[5])) {
+ if (!(*seen & SEEN_BOGUS_UNIX_FROM)) {
+ *seen |= SEEN_BOGUS_UNIX_FROM;
+ return;
+ }
+ }
+ if (!memcmp("From:", line, 5) && isspace(line[5])) {
+ if (!(*seen & SEEN_FROM) && handle_from(line+6)) {
+ *seen |= SEEN_FROM;
+ return;
+ }
+ }
+ if (!memcmp("Date:", line, 5) && isspace(line[5])) {
+ if (!(*seen & SEEN_DATE)) {
+ handle_date(line+6);
+ *seen |= SEEN_DATE;
+ return;
+ }
+ }
+ if (!memcmp("Subject:", line, 8) && isspace(line[8])) {
+ if (!(*seen & SEEN_SUBJECT)) {
+ handle_subject(line+9);
+ *seen |= SEEN_SUBJECT;
+ return;
+ }
+ }
+ if (!memcmp("[PATCH]", line, 7) && isspace(line[7])) {
+ if (!(*seen & SEEN_SUBJECT)) {
+ handle_subject(line);
+ *seen |= SEEN_SUBJECT;
+ return;
+ }
+ }
+ *seen |= SEEN_PREFIX;
+}
+
+static char *cleanup_subject(char *subject)
+{
+ if (keep_subject)
+ return subject;
+ for (;;) {
+ char *p;
+ int len, remove;
+ switch (*subject) {
+ case 'r': case 'R':
+ if (!memcmp("e:", subject+1, 2)) {
+ subject +=3;
+ continue;
+ }
+ break;
+ case ' ': case '\t': case ':':
+ subject++;
+ continue;
+
+ case '[':
+ p = strchr(subject, ']');
+ if (!p) {
+ subject++;
+ continue;
+ }
+ len = strlen(p);
+ remove = p - subject;
+ if (remove <= len *2) {
+ subject = p+1;
+ continue;
+ }
+ break;
+ }
+ eatspace(subject);
+ return subject;
+ }
+}
+
+static void cleanup_space(char *buf)
+{
+ unsigned char c;
+ while ((c = *buf) != 0) {
+ buf++;
+ if (isspace(c)) {
+ buf[-1] = ' ';
+ c = *buf;
+ while (isspace(c)) {
+ int len = strlen(buf);
+ memmove(buf, buf+1, len);
+ c = *buf;
+ }
+ }
+ }
+}
+
+static void decode_header_bq(char *it);
+typedef int (*header_fn_t)(char *);
+struct header_def {
+ const char *name;
+ header_fn_t func;
+ int namelen;
+};
+
+static void check_header(char *line, struct header_def *header)
+{
+ int i;
+
+ if (header[0].namelen <= 0) {
+ for (i = 0; header[i].name; i++)
+ header[i].namelen = strlen(header[i].name);
+ }
+ for (i = 0; header[i].name; i++) {
+ int len = header[i].namelen;
+ if (!strncasecmp(line, header[i].name, len) &&
+ line[len] == ':' && isspace(line[len + 1])) {
+ /* Unwrap inline B and Q encoding, and optionally
+ * normalize the meta information to utf8.
+ */
+ decode_header_bq(line + len + 2);
+ header[i].func(line + len + 2);
+ break;
+ }
+ }
+}
+
+static void check_subheader_line(char *line)
+{
+ static struct header_def header[] = {
+ { "Content-Type", handle_subcontent_type },
+ { "Content-Transfer-Encoding",
+ handle_content_transfer_encoding },
+ { NULL },
+ };
+ check_header(line, header);
+}
+static void check_header_line(char *line)
+{
+ static struct header_def header[] = {
+ { "From", handle_from },
+ { "Date", handle_date },
+ { "Subject", handle_subject },
+ { "Content-Type", handle_content_type },
+ { "Content-Transfer-Encoding",
+ handle_content_transfer_encoding },
+ { NULL },
+ };
+ check_header(line, header);
+}
+
+static int is_rfc2822_header(char *line)
+{
+ /*
+ * The section that defines the loosest possible
+ * field name is "3.6.8 Optional fields".
+ *
+ * optional-field = field-name ":" unstructured CRLF
+ * field-name = 1*ftext
+ * ftext = %d33-57 / %59-126
+ */
+ int ch;
+ char *cp = line;
+ while ((ch = *cp++)) {
+ if (ch == ':')
+ return cp != line;
+ if ((33 <= ch && ch <= 57) ||
+ (59 <= ch && ch <= 126))
+ continue;
+ break;
+ }
+ return 0;
+}
+
+static int read_one_header_line(char *line, int sz, FILE *in)
+{
+ int ofs = 0;
+ while (ofs < sz) {
+ int peek, len;
+ if (fgets(line + ofs, sz - ofs, in) == NULL)
+ break;
+ len = eatspace(line + ofs);
+ if ((len == 0) || !is_rfc2822_header(line)) {
+ /* Re-add the newline */
+ line[ofs + len] = '\n';
+ line[ofs + len + 1] = '\0';
+ break;
+ }
+ ofs += len;
+ /* Yuck, 2822 header "folding" */
+ peek = fgetc(in); ungetc(peek, in);
+ if (peek != ' ' && peek != '\t')
+ break;
+ }
+ /* Count mbox From headers as headers */
+ if (!ofs && !memcmp(line, "From ", 5))
+ ofs = 1;
+ return ofs;
+}
+
+static unsigned hexval(int c)
+{
+ if (c >= '0' && c <= '9')
+ return c - '0';
+ if (c >= 'a' && c <= 'f')
+ return c - 'a' + 10;
+ if (c >= 'A' && c <= 'F')
+ return c - 'A' + 10;
+ return ~0;
+}
+
+static int decode_q_segment(char *in, char *ot, char *ep, int rfc2047)
+{
+ int c;
+ while ((c = *in++) != 0 && (in <= ep)) {
+ if (c == '=') {
+ int d = *in++;
+ if (d == '\n' || !d)
+ break; /* drop trailing newline */
+ *ot++ = ((hexval(d) << 4) | hexval(*in++));
+ continue;
+ }
+ if (rfc2047 && c == '_') /* rfc2047 4.2 (2) */
+ c = 0x20;
+ *ot++ = c;
+ }
+ *ot = 0;
+ return 0;
+}
+
+static int decode_b_segment(char *in, char *ot, char *ep)
+{
+ /* Decode in..ep, possibly in-place to ot */
+ int c, pos = 0, acc = 0;
+
+ while ((c = *in++) != 0 && (in <= ep)) {
+ if (c == '+')
+ c = 62;
+ else if (c == '/')
+ c = 63;
+ else if ('A' <= c && c <= 'Z')
+ c -= 'A';
+ else if ('a' <= c && c <= 'z')
+ c -= 'a' - 26;
+ else if ('0' <= c && c <= '9')
+ c -= '0' - 52;
+ else if (c == '=') {
+ /* padding is almost like (c == 0), except we do
+ * not output NUL resulting only from it;
+ * for now we just trust the data.
+ */
+ c = 0;
+ }
+ else
+ continue; /* garbage */
+ switch (pos++) {
+ case 0:
+ acc = (c << 2);
+ break;
+ case 1:
+ *ot++ = (acc | (c >> 4));
+ acc = (c & 15) << 4;
+ break;
+ case 2:
+ *ot++ = (acc | (c >> 2));
+ acc = (c & 3) << 6;
+ break;
+ case 3:
+ *ot++ = (acc | c);
+ acc = pos = 0;
+ break;
+ }
+ }
+ *ot = 0;
+ return 0;
+}
+
+static void convert_to_utf8(char *line, char *charset)
+{
+#ifndef NO_ICONV
+ char *in, *out;
+ size_t insize, outsize, nrc;
+ char outbuf[4096]; /* cheat */
+ static char latin_one[] = "latin1";
+ char *input_charset = *charset ? charset : latin_one;
+ iconv_t conv = iconv_open(metainfo_charset, input_charset);
+
+ if (conv == (iconv_t) -1) {
+ static int warned_latin1_once = 0;
+ if (input_charset != latin_one) {
+ fprintf(stderr, "cannot convert from %s to %s\n",
+ input_charset, metainfo_charset);
+ *charset = 0;
+ }
+ else if (!warned_latin1_once) {
+ warned_latin1_once = 1;
+ fprintf(stderr, "tried to convert from %s to %s, "
+ "but your iconv does not work with it.\n",
+ input_charset, metainfo_charset);
+ }
+ return;
+ }
+ in = line;
+ insize = strlen(in);
+ out = outbuf;
+ outsize = sizeof(outbuf);
+ nrc = iconv(conv, &in, &insize, &out, &outsize);
+ iconv_close(conv);
+ if (nrc == (size_t) -1)
+ return;
+ *out = 0;
+ strcpy(line, outbuf);
+#endif
+}
+
+static void decode_header_bq(char *it)
+{
+ char *in, *out, *ep, *cp, *sp;
+ char outbuf[1000];
+
+ in = it;
+ out = outbuf;
+ while ((ep = strstr(in, "=?")) != NULL) {
+ int sz, encoding;
+ char charset_q[256], piecebuf[256];
+ if (in != ep) {
+ sz = ep - in;
+ memcpy(out, in, sz);
+ out += sz;
+ in += sz;
+ }
+ /* E.g.
+ * ep : "=?iso-2022-jp?B?GyR...?= foo"
+ * ep : "=?ISO-8859-1?Q?Foo=FCbar?= baz"
+ */
+ ep += 2;
+ cp = strchr(ep, '?');
+ if (!cp)
+ return; /* no munging */
+ for (sp = ep; sp < cp; sp++)
+ charset_q[sp - ep] = tolower(*sp);
+ charset_q[cp - ep] = 0;
+ encoding = cp[1];
+ if (!encoding || cp[2] != '?')
+ return; /* no munging */
+ ep = strstr(cp + 3, "?=");
+ if (!ep)
+ return; /* no munging */
+ switch (tolower(encoding)) {
+ default:
+ return; /* no munging */
+ case 'b':
+ sz = decode_b_segment(cp + 3, piecebuf, ep);
+ break;
+ case 'q':
+ sz = decode_q_segment(cp + 3, piecebuf, ep, 1);
+ break;
+ }
+ if (sz < 0)
+ return;
+ if (metainfo_charset)
+ convert_to_utf8(piecebuf, charset_q);
+ strcpy(out, piecebuf);
+ out += strlen(out);
+ in = ep + 2;
+ }
+ strcpy(out, in);
+ strcpy(it, outbuf);
+}
+
+static void decode_transfer_encoding(char *line)
+{
+ char *ep;
+
+ switch (transfer_encoding) {
+ case TE_QP:
+ ep = line + strlen(line);
+ decode_q_segment(line, line, ep, 0);
+ break;
+ case TE_BASE64:
+ ep = line + strlen(line);
+ decode_b_segment(line, line, ep);
+ break;
+ case TE_DONTCARE:
+ break;
+ }
+}
+
+static void handle_info(void)
+{
+ char *sub;
+
+ sub = cleanup_subject(subject);
+ cleanup_space(name);
+ cleanup_space(date);
+ cleanup_space(email);
+ cleanup_space(sub);
+
+ fprintf(fout, "Author: %s\nEmail: %s\nSubject: %s\nDate: %s\n\n",
+ name, email, sub, date);
+}
+
+/* We are inside message body and have read line[] already.
+ * Spit out the commit log.
+ */
+static int handle_commit_msg(int *seen)
+{
+ if (!cmitmsg)
+ return 0;
+ do {
+ if (!memcmp("diff -", line, 6) ||
+ !memcmp("---", line, 3) ||
+ !memcmp("Index: ", line, 7))
+ break;
+ if ((multipart_boundary[0] && is_multipart_boundary(line))) {
+ /* We come here when the first part had only
+ * the commit message without any patch. We
+ * pretend we have not seen this line yet, and
+ * go back to the loop.
+ */
+ return 1;
+ }
+
+ /* Unwrap transfer encoding and optionally
+ * normalize the log message to UTF-8.
+ */
+ decode_transfer_encoding(line);
+ if (metainfo_charset)
+ convert_to_utf8(line, charset);
+
+ handle_inbody_header(seen, line);
+ if (!(*seen & SEEN_PREFIX))
+ continue;
+
+ fputs(line, cmitmsg);
+ } while (fgets(line, sizeof(line), fin) != NULL);
+ fclose(cmitmsg);
+ cmitmsg = NULL;
+ return 0;
+}
+
+/* We have done the commit message and have the first
+ * line of the patch in line[].
+ */
+static void handle_patch(void)
+{
+ do {
+ if (multipart_boundary[0] && is_multipart_boundary(line))
+ break;
+ /* Only unwrap transfer encoding but otherwise do not
+ * do anything. We do *NOT* want UTF-8 conversion
+ * here; we are dealing with the user payload.
+ */
+ decode_transfer_encoding(line);
+ fputs(line, patchfile);
+ patch_lines++;
+ } while (fgets(line, sizeof(line), fin) != NULL);
+}
+
+/* multipart boundary and transfer encoding are set up for us, and we
+ * are at the end of the sub header. do equivalent of handle_body up
+ * to the next boundary without closing patchfile --- we will expect
+ * that the first part to contain commit message and a patch, and
+ * handle other parts as pure patches.
+ */
+static int handle_multipart_one_part(int *seen)
+{
+ int n = 0;
+
+ while (fgets(line, sizeof(line), fin) != NULL) {
+ again:
+ n++;
+ if (is_multipart_boundary(line))
+ break;
+ if (handle_commit_msg(seen))
+ goto again;
+ handle_patch();
+ break;
+ }
+ if (n == 0)
+ return -1;
+ return 0;
+}
+
+static void handle_multipart_body(void)
+{
+ int seen = 0;
+ int part_num = 0;
+
+ /* Skip up to the first boundary */
+ while (fgets(line, sizeof(line), fin) != NULL)
+ if (is_multipart_boundary(line)) {
+ part_num = 1;
+ break;
+ }
+ if (!part_num)
+ return;
+ /* We are on boundary line. Start slurping the subhead. */
+ while (1) {
+ int hdr = read_one_header_line(line, sizeof(line), fin);
+ if (!hdr) {
+ if (handle_multipart_one_part(&seen) < 0)
+ return;
+ /* Reset per part headers */
+ transfer_encoding = TE_DONTCARE;
+ charset[0] = 0;
+ }
+ else
+ check_subheader_line(line);
+ }
+ fclose(patchfile);
+ if (!patch_lines) {
+ fprintf(stderr, "No patch found\n");
+ exit(1);
+ }
+}
+
+/* Non multipart message */
+static void handle_body(void)
+{
+ int seen = 0;
+
+ handle_commit_msg(&seen);
+ handle_patch();
+ fclose(patchfile);
+ if (!patch_lines) {
+ fprintf(stderr, "No patch found\n");
+ exit(1);
+ }
+}
+
+int mailinfo(FILE *in, FILE *out, int ks, const char *encoding,
+ const char *msg, const char *patch)
+{
+ keep_subject = ks;
+ metainfo_charset = encoding;
+ fin = in;
+ fout = out;
+
+ cmitmsg = fopen(msg, "w");
+ if (!cmitmsg) {
+ perror(msg);
+ return -1;
+ }
+ patchfile = fopen(patch, "w");
+ if (!patchfile) {
+ perror(patch);
+ fclose(cmitmsg);
+ return -1;
+ }
+ while (1) {
+ int hdr = read_one_header_line(line, sizeof(line), fin);
+ if (!hdr) {
+ if (multipart_boundary[0])
+ handle_multipart_body();
+ else
+ handle_body();
+ handle_info();
+ break;
+ }
+ check_header_line(line);
+ }
+
+ return 0;
+}
+
+static const char mailinfo_usage[] =
+ "git-mailinfo [-k] [-u | --encoding=<encoding>] msg patch <mail >info";
+
+int cmd_mailinfo(int argc, const char **argv, char **envp)
+{
+ /* NEEDSWORK: might want to do the optional .git/ directory
+ * discovery
+ */
+ git_config(git_default_config);
+
+ while (1 < argc && argv[1][0] == '-') {
+ if (!strcmp(argv[1], "-k"))
+ keep_subject = 1;
+ else if (!strcmp(argv[1], "-u"))
+ metainfo_charset = git_commit_encoding;
+ else if (!strncmp(argv[1], "--encoding=", 11))
+ metainfo_charset = argv[1] + 11;
+ else
+ usage(mailinfo_usage);
+ argc--; argv++;
+ }
+
+ if (argc != 3)
+ usage(mailinfo_usage);
+
+ return !!mailinfo(stdin, stdout, keep_subject, metainfo_charset, argv[1], argv[2]);
+}
#ifndef BUILTIN_H
#define BUILTIN_H
+#include <stdio.h>
+
#ifndef PATH_MAX
# define PATH_MAX 4096
#endif
extern int cmd_mailsplit(int argc, const char **argv, char **envp);
extern int split_mbox(const char **mbox, const char *dir, int allow_bare, int nr_prec, int skip);
+
+extern int cmd_mailinfo(int argc, const char **argv, char **envp);
+extern int mailinfo(FILE *in, FILE *out, int ks, const char *encoding, const char *msg, const char *patch);
#endif
{ "cat-file", cmd_cat_file },
{ "rev-parse", cmd_rev_parse },
{ "write-tree", cmd_write_tree },
- { "mailsplit", cmd_mailsplit }
+ { "mailsplit", cmd_mailsplit },
+ { "mailinfo", cmd_mailinfo }
};
int i;
+++ /dev/null
-/*
- * Another stupid program, this one parsing the headers of an
- * email to figure out authorship and subject
- */
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#ifndef NO_ICONV
-#include <iconv.h>
-#endif
-#include "git-compat-util.h"
-#include "cache.h"
-
-static FILE *cmitmsg, *patchfile;
-
-static int keep_subject = 0;
-static char *metainfo_charset = NULL;
-static char line[1000];
-static char date[1000];
-static char name[1000];
-static char email[1000];
-static char subject[1000];
-
-static enum {
- TE_DONTCARE, TE_QP, TE_BASE64,
-} transfer_encoding;
-static char charset[256];
-
-static char multipart_boundary[1000];
-static int multipart_boundary_len;
-static int patch_lines = 0;
-
-static char *sanity_check(char *name, char *email)
-{
- int len = strlen(name);
- if (len < 3 || len > 60)
- return email;
- if (strchr(name, '@') || strchr(name, '<') || strchr(name, '>'))
- return email;
- return name;
-}
-
-static int bogus_from(char *line)
-{
- /* John Doe <johndoe> */
- char *bra, *ket, *dst, *cp;
-
- /* This is fallback, so do not bother if we already have an
- * e-mail address.
- */
- if (*email)
- return 0;
-
- bra = strchr(line, '<');
- if (!bra)
- return 0;
- ket = strchr(bra, '>');
- if (!ket)
- return 0;
-
- for (dst = email, cp = bra+1; cp < ket; )
- *dst++ = *cp++;
- *dst = 0;
- for (cp = line; isspace(*cp); cp++)
- ;
- for (bra--; isspace(*bra); bra--)
- *bra = 0;
- cp = sanity_check(cp, email);
- strcpy(name, cp);
- return 1;
-}
-
-static int handle_from(char *in_line)
-{
- char line[1000];
- char *at;
- char *dst;
-
- strcpy(line, in_line);
- at = strchr(line, '@');
- if (!at)
- return bogus_from(line);
-
- /*
- * If we already have one email, don't take any confusing lines
- */
- if (*email && strchr(at+1, '@'))
- return 0;
-
- /* Pick up the string around '@', possibly delimited with <>
- * pair; that is the email part. White them out while copying.
- */
- while (at > line) {
- char c = at[-1];
- if (isspace(c))
- break;
- if (c == '<') {
- at[-1] = ' ';
- break;
- }
- at--;
- }
- dst = email;
- for (;;) {
- unsigned char c = *at;
- if (!c || c == '>' || isspace(c)) {
- if (c == '>')
- *at = ' ';
- break;
- }
- *at++ = ' ';
- *dst++ = c;
- }
- *dst++ = 0;
-
- /* The remainder is name. It could be "John Doe <john.doe@xz>"
- * or "john.doe@xz (John Doe)", but we have whited out the
- * email part, so trim from both ends, possibly removing
- * the () pair at the end.
- */
- at = line + strlen(line);
- while (at > line) {
- unsigned char c = *--at;
- if (!isspace(c)) {
- at[(c == ')') ? 0 : 1] = 0;
- break;
- }
- }
-
- at = line;
- for (;;) {
- unsigned char c = *at;
- if (!c || !isspace(c)) {
- if (c == '(')
- at++;
- break;
- }
- at++;
- }
- at = sanity_check(at, email);
- strcpy(name, at);
- return 1;
-}
-
-static int handle_date(char *line)
-{
- strcpy(date, line);
- return 0;
-}
-
-static int handle_subject(char *line)
-{
- strcpy(subject, line);
- return 0;
-}
-
-/* NOTE NOTE NOTE. We do not claim we do full MIME. We just attempt
- * to have enough heuristics to grok MIME encoded patches often found
- * on our mailing lists. For example, we do not even treat header lines
- * case insensitively.
- */
-
-static int slurp_attr(const char *line, const char *name, char *attr)
-{
- char *ends, *ap = strcasestr(line, name);
- size_t sz;
-
- if (!ap) {
- *attr = 0;
- return 0;
- }
- ap += strlen(name);
- if (*ap == '"') {
- ap++;
- ends = "\"";
- }
- else
- ends = "; \t";
- sz = strcspn(ap, ends);
- memcpy(attr, ap, sz);
- attr[sz] = 0;
- return 1;
-}
-
-static int handle_subcontent_type(char *line)
-{
- /* We do not want to mess with boundary. Note that we do not
- * handle nested multipart.
- */
- if (strcasestr(line, "boundary=")) {
- fprintf(stderr, "Not handling nested multipart message.\n");
- exit(1);
- }
- slurp_attr(line, "charset=", charset);
- if (*charset) {
- int i, c;
- for (i = 0; (c = charset[i]) != 0; i++)
- charset[i] = tolower(c);
- }
- return 0;
-}
-
-static int handle_content_type(char *line)
-{
- *multipart_boundary = 0;
- if (slurp_attr(line, "boundary=", multipart_boundary + 2)) {
- memcpy(multipart_boundary, "--", 2);
- multipart_boundary_len = strlen(multipart_boundary);
- }
- slurp_attr(line, "charset=", charset);
- return 0;
-}
-
-static int handle_content_transfer_encoding(char *line)
-{
- if (strcasestr(line, "base64"))
- transfer_encoding = TE_BASE64;
- else if (strcasestr(line, "quoted-printable"))
- transfer_encoding = TE_QP;
- else
- transfer_encoding = TE_DONTCARE;
- return 0;
-}
-
-static int is_multipart_boundary(const char *line)
-{
- return (!memcmp(line, multipart_boundary, multipart_boundary_len));
-}
-
-static int eatspace(char *line)
-{
- int len = strlen(line);
- while (len > 0 && isspace(line[len-1]))
- line[--len] = 0;
- return len;
-}
-
-#define SEEN_FROM 01
-#define SEEN_DATE 02
-#define SEEN_SUBJECT 04
-#define SEEN_BOGUS_UNIX_FROM 010
-#define SEEN_PREFIX 020
-
-/* First lines of body can have From:, Date:, and Subject: or empty */
-static void handle_inbody_header(int *seen, char *line)
-{
- if (*seen & SEEN_PREFIX)
- return;
- if (isspace(*line)) {
- char *cp;
- for (cp = line + 1; *cp; cp++) {
- if (!isspace(*cp))
- break;
- }
- if (!*cp)
- return;
- }
- if (!memcmp(">From", line, 5) && isspace(line[5])) {
- if (!(*seen & SEEN_BOGUS_UNIX_FROM)) {
- *seen |= SEEN_BOGUS_UNIX_FROM;
- return;
- }
- }
- if (!memcmp("From:", line, 5) && isspace(line[5])) {
- if (!(*seen & SEEN_FROM) && handle_from(line+6)) {
- *seen |= SEEN_FROM;
- return;
- }
- }
- if (!memcmp("Date:", line, 5) && isspace(line[5])) {
- if (!(*seen & SEEN_DATE)) {
- handle_date(line+6);
- *seen |= SEEN_DATE;
- return;
- }
- }
- if (!memcmp("Subject:", line, 8) && isspace(line[8])) {
- if (!(*seen & SEEN_SUBJECT)) {
- handle_subject(line+9);
- *seen |= SEEN_SUBJECT;
- return;
- }
- }
- if (!memcmp("[PATCH]", line, 7) && isspace(line[7])) {
- if (!(*seen & SEEN_SUBJECT)) {
- handle_subject(line);
- *seen |= SEEN_SUBJECT;
- return;
- }
- }
- *seen |= SEEN_PREFIX;
-}
-
-static char *cleanup_subject(char *subject)
-{
- if (keep_subject)
- return subject;
- for (;;) {
- char *p;
- int len, remove;
- switch (*subject) {
- case 'r': case 'R':
- if (!memcmp("e:", subject+1, 2)) {
- subject +=3;
- continue;
- }
- break;
- case ' ': case '\t': case ':':
- subject++;
- continue;
-
- case '[':
- p = strchr(subject, ']');
- if (!p) {
- subject++;
- continue;
- }
- len = strlen(p);
- remove = p - subject;
- if (remove <= len *2) {
- subject = p+1;
- continue;
- }
- break;
- }
- eatspace(subject);
- return subject;
- }
-}
-
-static void cleanup_space(char *buf)
-{
- unsigned char c;
- while ((c = *buf) != 0) {
- buf++;
- if (isspace(c)) {
- buf[-1] = ' ';
- c = *buf;
- while (isspace(c)) {
- int len = strlen(buf);
- memmove(buf, buf+1, len);
- c = *buf;
- }
- }
- }
-}
-
-static void decode_header_bq(char *it);
-typedef int (*header_fn_t)(char *);
-struct header_def {
- const char *name;
- header_fn_t func;
- int namelen;
-};
-
-static void check_header(char *line, struct header_def *header)
-{
- int i;
-
- if (header[0].namelen <= 0) {
- for (i = 0; header[i].name; i++)
- header[i].namelen = strlen(header[i].name);
- }
- for (i = 0; header[i].name; i++) {
- int len = header[i].namelen;
- if (!strncasecmp(line, header[i].name, len) &&
- line[len] == ':' && isspace(line[len + 1])) {
- /* Unwrap inline B and Q encoding, and optionally
- * normalize the meta information to utf8.
- */
- decode_header_bq(line + len + 2);
- header[i].func(line + len + 2);
- break;
- }
- }
-}
-
-static void check_subheader_line(char *line)
-{
- static struct header_def header[] = {
- { "Content-Type", handle_subcontent_type },
- { "Content-Transfer-Encoding",
- handle_content_transfer_encoding },
- { NULL },
- };
- check_header(line, header);
-}
-static void check_header_line(char *line)
-{
- static struct header_def header[] = {
- { "From", handle_from },
- { "Date", handle_date },
- { "Subject", handle_subject },
- { "Content-Type", handle_content_type },
- { "Content-Transfer-Encoding",
- handle_content_transfer_encoding },
- { NULL },
- };
- check_header(line, header);
-}
-
-static int is_rfc2822_header(char *line)
-{
- /*
- * The section that defines the loosest possible
- * field name is "3.6.8 Optional fields".
- *
- * optional-field = field-name ":" unstructured CRLF
- * field-name = 1*ftext
- * ftext = %d33-57 / %59-126
- */
- int ch;
- char *cp = line;
- while ((ch = *cp++)) {
- if (ch == ':')
- return cp != line;
- if ((33 <= ch && ch <= 57) ||
- (59 <= ch && ch <= 126))
- continue;
- break;
- }
- return 0;
-}
-
-static int read_one_header_line(char *line, int sz, FILE *in)
-{
- int ofs = 0;
- while (ofs < sz) {
- int peek, len;
- if (fgets(line + ofs, sz - ofs, in) == NULL)
- break;
- len = eatspace(line + ofs);
- if ((len == 0) || !is_rfc2822_header(line)) {
- /* Re-add the newline */
- line[ofs + len] = '\n';
- line[ofs + len + 1] = '\0';
- break;
- }
- ofs += len;
- /* Yuck, 2822 header "folding" */
- peek = fgetc(in); ungetc(peek, in);
- if (peek != ' ' && peek != '\t')
- break;
- }
- /* Count mbox From headers as headers */
- if (!ofs && !memcmp(line, "From ", 5))
- ofs = 1;
- return ofs;
-}
-
-static unsigned hexval(int c)
-{
- if (c >= '0' && c <= '9')
- return c - '0';
- if (c >= 'a' && c <= 'f')
- return c - 'a' + 10;
- if (c >= 'A' && c <= 'F')
- return c - 'A' + 10;
- return ~0;
-}
-
-static int decode_q_segment(char *in, char *ot, char *ep, int rfc2047)
-{
- int c;
- while ((c = *in++) != 0 && (in <= ep)) {
- if (c == '=') {
- int d = *in++;
- if (d == '\n' || !d)
- break; /* drop trailing newline */
- *ot++ = ((hexval(d) << 4) | hexval(*in++));
- continue;
- }
- if (rfc2047 && c == '_') /* rfc2047 4.2 (2) */
- c = 0x20;
- *ot++ = c;
- }
- *ot = 0;
- return 0;
-}
-
-static int decode_b_segment(char *in, char *ot, char *ep)
-{
- /* Decode in..ep, possibly in-place to ot */
- int c, pos = 0, acc = 0;
-
- while ((c = *in++) != 0 && (in <= ep)) {
- if (c == '+')
- c = 62;
- else if (c == '/')
- c = 63;
- else if ('A' <= c && c <= 'Z')
- c -= 'A';
- else if ('a' <= c && c <= 'z')
- c -= 'a' - 26;
- else if ('0' <= c && c <= '9')
- c -= '0' - 52;
- else if (c == '=') {
- /* padding is almost like (c == 0), except we do
- * not output NUL resulting only from it;
- * for now we just trust the data.
- */
- c = 0;
- }
- else
- continue; /* garbage */
- switch (pos++) {
- case 0:
- acc = (c << 2);
- break;
- case 1:
- *ot++ = (acc | (c >> 4));
- acc = (c & 15) << 4;
- break;
- case 2:
- *ot++ = (acc | (c >> 2));
- acc = (c & 3) << 6;
- break;
- case 3:
- *ot++ = (acc | c);
- acc = pos = 0;
- break;
- }
- }
- *ot = 0;
- return 0;
-}
-
-static void convert_to_utf8(char *line, char *charset)
-{
-#ifndef NO_ICONV
- char *in, *out;
- size_t insize, outsize, nrc;
- char outbuf[4096]; /* cheat */
- static char latin_one[] = "latin1";
- char *input_charset = *charset ? charset : latin_one;
- iconv_t conv = iconv_open(metainfo_charset, input_charset);
-
- if (conv == (iconv_t) -1) {
- static int warned_latin1_once = 0;
- if (input_charset != latin_one) {
- fprintf(stderr, "cannot convert from %s to %s\n",
- input_charset, metainfo_charset);
- *charset = 0;
- }
- else if (!warned_latin1_once) {
- warned_latin1_once = 1;
- fprintf(stderr, "tried to convert from %s to %s, "
- "but your iconv does not work with it.\n",
- input_charset, metainfo_charset);
- }
- return;
- }
- in = line;
- insize = strlen(in);
- out = outbuf;
- outsize = sizeof(outbuf);
- nrc = iconv(conv, &in, &insize, &out, &outsize);
- iconv_close(conv);
- if (nrc == (size_t) -1)
- return;
- *out = 0;
- strcpy(line, outbuf);
-#endif
-}
-
-static void decode_header_bq(char *it)
-{
- char *in, *out, *ep, *cp, *sp;
- char outbuf[1000];
-
- in = it;
- out = outbuf;
- while ((ep = strstr(in, "=?")) != NULL) {
- int sz, encoding;
- char charset_q[256], piecebuf[256];
- if (in != ep) {
- sz = ep - in;
- memcpy(out, in, sz);
- out += sz;
- in += sz;
- }
- /* E.g.
- * ep : "=?iso-2022-jp?B?GyR...?= foo"
- * ep : "=?ISO-8859-1?Q?Foo=FCbar?= baz"
- */
- ep += 2;
- cp = strchr(ep, '?');
- if (!cp)
- return; /* no munging */
- for (sp = ep; sp < cp; sp++)
- charset_q[sp - ep] = tolower(*sp);
- charset_q[cp - ep] = 0;
- encoding = cp[1];
- if (!encoding || cp[2] != '?')
- return; /* no munging */
- ep = strstr(cp + 3, "?=");
- if (!ep)
- return; /* no munging */
- switch (tolower(encoding)) {
- default:
- return; /* no munging */
- case 'b':
- sz = decode_b_segment(cp + 3, piecebuf, ep);
- break;
- case 'q':
- sz = decode_q_segment(cp + 3, piecebuf, ep, 1);
- break;
- }
- if (sz < 0)
- return;
- if (metainfo_charset)
- convert_to_utf8(piecebuf, charset_q);
- strcpy(out, piecebuf);
- out += strlen(out);
- in = ep + 2;
- }
- strcpy(out, in);
- strcpy(it, outbuf);
-}
-
-static void decode_transfer_encoding(char *line)
-{
- char *ep;
-
- switch (transfer_encoding) {
- case TE_QP:
- ep = line + strlen(line);
- decode_q_segment(line, line, ep, 0);
- break;
- case TE_BASE64:
- ep = line + strlen(line);
- decode_b_segment(line, line, ep);
- break;
- case TE_DONTCARE:
- break;
- }
-}
-
-static void handle_info(void)
-{
- char *sub;
-
- sub = cleanup_subject(subject);
- cleanup_space(name);
- cleanup_space(date);
- cleanup_space(email);
- cleanup_space(sub);
-
- printf("Author: %s\nEmail: %s\nSubject: %s\nDate: %s\n\n",
- name, email, sub, date);
-}
-
-/* We are inside message body and have read line[] already.
- * Spit out the commit log.
- */
-static int handle_commit_msg(int *seen)
-{
- if (!cmitmsg)
- return 0;
- do {
- if (!memcmp("diff -", line, 6) ||
- !memcmp("---", line, 3) ||
- !memcmp("Index: ", line, 7))
- break;
- if ((multipart_boundary[0] && is_multipart_boundary(line))) {
- /* We come here when the first part had only
- * the commit message without any patch. We
- * pretend we have not seen this line yet, and
- * go back to the loop.
- */
- return 1;
- }
-
- /* Unwrap transfer encoding and optionally
- * normalize the log message to UTF-8.
- */
- decode_transfer_encoding(line);
- if (metainfo_charset)
- convert_to_utf8(line, charset);
-
- handle_inbody_header(seen, line);
- if (!(*seen & SEEN_PREFIX))
- continue;
-
- fputs(line, cmitmsg);
- } while (fgets(line, sizeof(line), stdin) != NULL);
- fclose(cmitmsg);
- cmitmsg = NULL;
- return 0;
-}
-
-/* We have done the commit message and have the first
- * line of the patch in line[].
- */
-static void handle_patch(void)
-{
- do {
- if (multipart_boundary[0] && is_multipart_boundary(line))
- break;
- /* Only unwrap transfer encoding but otherwise do not
- * do anything. We do *NOT* want UTF-8 conversion
- * here; we are dealing with the user payload.
- */
- decode_transfer_encoding(line);
- fputs(line, patchfile);
- patch_lines++;
- } while (fgets(line, sizeof(line), stdin) != NULL);
-}
-
-/* multipart boundary and transfer encoding are set up for us, and we
- * are at the end of the sub header. do equivalent of handle_body up
- * to the next boundary without closing patchfile --- we will expect
- * that the first part to contain commit message and a patch, and
- * handle other parts as pure patches.
- */
-static int handle_multipart_one_part(int *seen)
-{
- int n = 0;
-
- while (fgets(line, sizeof(line), stdin) != NULL) {
- again:
- n++;
- if (is_multipart_boundary(line))
- break;
- if (handle_commit_msg(seen))
- goto again;
- handle_patch();
- break;
- }
- if (n == 0)
- return -1;
- return 0;
-}
-
-static void handle_multipart_body(void)
-{
- int seen = 0;
- int part_num = 0;
-
- /* Skip up to the first boundary */
- while (fgets(line, sizeof(line), stdin) != NULL)
- if (is_multipart_boundary(line)) {
- part_num = 1;
- break;
- }
- if (!part_num)
- return;
- /* We are on boundary line. Start slurping the subhead. */
- while (1) {
- int hdr = read_one_header_line(line, sizeof(line), stdin);
- if (!hdr) {
- if (handle_multipart_one_part(&seen) < 0)
- return;
- /* Reset per part headers */
- transfer_encoding = TE_DONTCARE;
- charset[0] = 0;
- }
- else
- check_subheader_line(line);
- }
- fclose(patchfile);
- if (!patch_lines) {
- fprintf(stderr, "No patch found\n");
- exit(1);
- }
-}
-
-/* Non multipart message */
-static void handle_body(void)
-{
- int seen = 0;
-
- handle_commit_msg(&seen);
- handle_patch();
- fclose(patchfile);
- if (!patch_lines) {
- fprintf(stderr, "No patch found\n");
- exit(1);
- }
-}
-
-static const char mailinfo_usage[] =
- "git-mailinfo [-k] [-u | --encoding=<encoding>] msg patch <mail >info";
-
-int main(int argc, char **argv)
-{
- /* NEEDSWORK: might want to do the optional .git/ directory
- * discovery
- */
- git_config(git_default_config);
-
- while (1 < argc && argv[1][0] == '-') {
- if (!strcmp(argv[1], "-k"))
- keep_subject = 1;
- else if (!strcmp(argv[1], "-u"))
- metainfo_charset = git_commit_encoding;
- else if (!strncmp(argv[1], "--encoding=", 11))
- metainfo_charset = argv[1] + 11;
- else
- usage(mailinfo_usage);
- argc--; argv++;
- }
-
- if (argc != 3)
- usage(mailinfo_usage);
- cmitmsg = fopen(argv[1], "w");
- if (!cmitmsg) {
- perror(argv[1]);
- exit(1);
- }
- patchfile = fopen(argv[2], "w");
- if (!patchfile) {
- perror(argv[2]);
- exit(1);
- }
- while (1) {
- int hdr = read_one_header_line(line, sizeof(line), stdin);
- if (!hdr) {
- if (multipart_boundary[0])
- handle_multipart_body();
- else
- handle_body();
- handle_info();
- break;
- }
- check_header_line(line);
- }
- return 0;
-}