1041 lines
23 KiB
C
1041 lines
23 KiB
C
/*
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* Another stupid program, this one parsing the headers of an
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* email to figure out authorship and subject
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*/
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#include "cache.h"
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#include "builtin.h"
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#include "utf8.h"
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#include "strbuf.h"
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static FILE *cmitmsg, *patchfile, *fin, *fout;
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static int keep_subject;
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static int keep_non_patch_brackets_in_subject;
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static const char *metainfo_charset;
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static struct strbuf line = STRBUF_INIT;
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static struct strbuf name = STRBUF_INIT;
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static struct strbuf email = STRBUF_INIT;
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static enum {
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TE_DONTCARE, TE_QP, TE_BASE64
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} transfer_encoding;
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static struct strbuf charset = STRBUF_INIT;
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static int patch_lines;
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static struct strbuf **p_hdr_data, **s_hdr_data;
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static int use_scissors;
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static int use_inbody_headers = 1;
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#define MAX_HDR_PARSED 10
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#define MAX_BOUNDARIES 5
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static void cleanup_space(struct strbuf *sb);
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static void get_sane_name(struct strbuf *out, struct strbuf *name, struct strbuf *email)
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{
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struct strbuf *src = name;
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if (name->len < 3 || 60 < name->len || strchr(name->buf, '@') ||
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strchr(name->buf, '<') || strchr(name->buf, '>'))
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src = email;
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else if (name == out)
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return;
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strbuf_reset(out);
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strbuf_addbuf(out, src);
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}
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static void parse_bogus_from(const struct strbuf *line)
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{
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/* John Doe <johndoe> */
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char *bra, *ket;
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/* This is fallback, so do not bother if we already have an
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* e-mail address.
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*/
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if (email.len)
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return;
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bra = strchr(line->buf, '<');
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if (!bra)
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return;
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ket = strchr(bra, '>');
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if (!ket)
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return;
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strbuf_reset(&email);
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strbuf_add(&email, bra + 1, ket - bra - 1);
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strbuf_reset(&name);
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strbuf_add(&name, line->buf, bra - line->buf);
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strbuf_trim(&name);
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get_sane_name(&name, &name, &email);
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}
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static void handle_from(const struct strbuf *from)
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{
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char *at;
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size_t el;
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struct strbuf f;
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strbuf_init(&f, from->len);
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strbuf_addbuf(&f, from);
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at = strchr(f.buf, '@');
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if (!at) {
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parse_bogus_from(from);
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return;
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}
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/*
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* If we already have one email, don't take any confusing lines
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*/
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if (email.len && strchr(at + 1, '@')) {
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strbuf_release(&f);
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return;
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}
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/* Pick up the string around '@', possibly delimited with <>
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* pair; that is the email part.
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*/
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while (at > f.buf) {
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char c = at[-1];
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if (isspace(c))
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break;
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if (c == '<') {
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at[-1] = ' ';
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break;
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}
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at--;
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}
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el = strcspn(at, " \n\t\r\v\f>");
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strbuf_reset(&email);
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strbuf_add(&email, at, el);
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strbuf_remove(&f, at - f.buf, el + (at[el] ? 1 : 0));
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/* The remainder is name. It could be
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*
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* - "John Doe <john.doe@xz>" (a), or
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* - "john.doe@xz (John Doe)" (b), or
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* - "John (zzz) Doe <john.doe@xz> (Comment)" (c)
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*
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* but we have removed the email part, so
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*
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* - remove extra spaces which could stay after email (case 'c'), and
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* - trim from both ends, possibly removing the () pair at the end
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* (cases 'a' and 'b').
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*/
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cleanup_space(&f);
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strbuf_trim(&f);
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if (f.buf[0] == '(' && f.len && f.buf[f.len - 1] == ')') {
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strbuf_remove(&f, 0, 1);
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strbuf_setlen(&f, f.len - 1);
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}
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get_sane_name(&name, &f, &email);
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strbuf_release(&f);
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}
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static void handle_header(struct strbuf **out, const struct strbuf *line)
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{
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if (!*out) {
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*out = xmalloc(sizeof(struct strbuf));
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strbuf_init(*out, line->len);
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} else
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strbuf_reset(*out);
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strbuf_addbuf(*out, line);
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}
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/* NOTE NOTE NOTE. We do not claim we do full MIME. We just attempt
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* to have enough heuristics to grok MIME encoded patches often found
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* on our mailing lists. For example, we do not even treat header lines
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* case insensitively.
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*/
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static int slurp_attr(const char *line, const char *name, struct strbuf *attr)
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{
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const char *ends, *ap = strcasestr(line, name);
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size_t sz;
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strbuf_setlen(attr, 0);
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if (!ap)
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return 0;
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ap += strlen(name);
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if (*ap == '"') {
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ap++;
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ends = "\"";
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}
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else
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ends = "; \t";
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sz = strcspn(ap, ends);
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strbuf_add(attr, ap, sz);
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return 1;
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}
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static struct strbuf *content[MAX_BOUNDARIES];
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static struct strbuf **content_top = content;
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static void handle_content_type(struct strbuf *line)
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{
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struct strbuf *boundary = xmalloc(sizeof(struct strbuf));
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strbuf_init(boundary, line->len);
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if (slurp_attr(line->buf, "boundary=", boundary)) {
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strbuf_insert(boundary, 0, "--", 2);
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if (++content_top > &content[MAX_BOUNDARIES]) {
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fprintf(stderr, "Too many boundaries to handle\n");
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exit(1);
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}
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*content_top = boundary;
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boundary = NULL;
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}
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slurp_attr(line->buf, "charset=", &charset);
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if (boundary) {
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strbuf_release(boundary);
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free(boundary);
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}
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}
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static void handle_content_transfer_encoding(const struct strbuf *line)
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{
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if (strcasestr(line->buf, "base64"))
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transfer_encoding = TE_BASE64;
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else if (strcasestr(line->buf, "quoted-printable"))
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transfer_encoding = TE_QP;
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else
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transfer_encoding = TE_DONTCARE;
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}
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static int is_multipart_boundary(const struct strbuf *line)
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{
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return (((*content_top)->len <= line->len) &&
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!memcmp(line->buf, (*content_top)->buf, (*content_top)->len));
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}
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static void cleanup_subject(struct strbuf *subject)
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{
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size_t at = 0;
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while (at < subject->len) {
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char *pos;
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size_t remove;
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switch (subject->buf[at]) {
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case 'r': case 'R':
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if (subject->len <= at + 3)
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break;
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if ((subject->buf[at + 1] == 'e' ||
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subject->buf[at + 1] == 'E') &&
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subject->buf[at + 2] == ':') {
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strbuf_remove(subject, at, 3);
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continue;
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}
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at++;
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break;
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case ' ': case '\t': case ':':
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strbuf_remove(subject, at, 1);
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continue;
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case '[':
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pos = strchr(subject->buf + at, ']');
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if (!pos)
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break;
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remove = pos - subject->buf + at + 1;
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if (!keep_non_patch_brackets_in_subject ||
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(7 <= remove &&
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memmem(subject->buf + at, remove, "PATCH", 5)))
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strbuf_remove(subject, at, remove);
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else {
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at += remove;
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/*
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* If the input had a space after the ], keep
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* it. We don't bother with finding the end of
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* the space, since we later normalize it
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* anyway.
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*/
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if (isspace(subject->buf[at]))
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at += 1;
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}
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continue;
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}
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break;
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}
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strbuf_trim(subject);
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}
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static void cleanup_space(struct strbuf *sb)
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{
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size_t pos, cnt;
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for (pos = 0; pos < sb->len; pos++) {
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if (isspace(sb->buf[pos])) {
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sb->buf[pos] = ' ';
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for (cnt = 0; isspace(sb->buf[pos + cnt + 1]); cnt++);
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strbuf_remove(sb, pos + 1, cnt);
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}
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}
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}
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static void decode_header(struct strbuf *line);
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static const char *header[MAX_HDR_PARSED] = {
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"From","Subject","Date",
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};
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static inline int cmp_header(const struct strbuf *line, const char *hdr)
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{
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int len = strlen(hdr);
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return !strncasecmp(line->buf, hdr, len) && line->len > len &&
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line->buf[len] == ':' && isspace(line->buf[len + 1]);
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}
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static int check_header(const struct strbuf *line,
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struct strbuf *hdr_data[], int overwrite)
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{
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int i, ret = 0, len;
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struct strbuf sb = STRBUF_INIT;
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/* search for the interesting parts */
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for (i = 0; header[i]; i++) {
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int len = strlen(header[i]);
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if ((!hdr_data[i] || overwrite) && cmp_header(line, header[i])) {
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/* Unwrap inline B and Q encoding, and optionally
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* normalize the meta information to utf8.
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*/
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strbuf_add(&sb, line->buf + len + 2, line->len - len - 2);
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decode_header(&sb);
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handle_header(&hdr_data[i], &sb);
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ret = 1;
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goto check_header_out;
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}
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}
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/* Content stuff */
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if (cmp_header(line, "Content-Type")) {
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len = strlen("Content-Type: ");
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strbuf_add(&sb, line->buf + len, line->len - len);
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decode_header(&sb);
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strbuf_insert(&sb, 0, "Content-Type: ", len);
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handle_content_type(&sb);
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ret = 1;
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goto check_header_out;
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}
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if (cmp_header(line, "Content-Transfer-Encoding")) {
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len = strlen("Content-Transfer-Encoding: ");
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strbuf_add(&sb, line->buf + len, line->len - len);
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decode_header(&sb);
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handle_content_transfer_encoding(&sb);
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ret = 1;
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goto check_header_out;
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}
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/* for inbody stuff */
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if (!prefixcmp(line->buf, ">From") && isspace(line->buf[5])) {
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ret = 1; /* Should this return 0? */
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goto check_header_out;
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}
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if (!prefixcmp(line->buf, "[PATCH]") && isspace(line->buf[7])) {
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for (i = 0; header[i]; i++) {
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if (!memcmp("Subject", header[i], 7)) {
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handle_header(&hdr_data[i], line);
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ret = 1;
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goto check_header_out;
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}
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}
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}
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check_header_out:
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strbuf_release(&sb);
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return ret;
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}
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static int is_rfc2822_header(const struct strbuf *line)
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{
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/*
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* The section that defines the loosest possible
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* field name is "3.6.8 Optional fields".
|
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*
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* optional-field = field-name ":" unstructured CRLF
|
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* field-name = 1*ftext
|
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* ftext = %d33-57 / %59-126
|
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*/
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int ch;
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char *cp = line->buf;
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|
|
|
/* Count mbox From headers as headers */
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if (!prefixcmp(cp, "From ") || !prefixcmp(cp, ">From "))
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return 1;
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while ((ch = *cp++)) {
|
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if (ch == ':')
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|
return 1;
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|
if ((33 <= ch && ch <= 57) ||
|
|
(59 <= ch && ch <= 126))
|
|
continue;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int read_one_header_line(struct strbuf *line, FILE *in)
|
|
{
|
|
/* Get the first part of the line. */
|
|
if (strbuf_getline(line, in, '\n'))
|
|
return 0;
|
|
|
|
/*
|
|
* Is it an empty line or not a valid rfc2822 header?
|
|
* If so, stop here, and return false ("not a header")
|
|
*/
|
|
strbuf_rtrim(line);
|
|
if (!line->len || !is_rfc2822_header(line)) {
|
|
/* Re-add the newline */
|
|
strbuf_addch(line, '\n');
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Now we need to eat all the continuation lines..
|
|
* Yuck, 2822 header "folding"
|
|
*/
|
|
for (;;) {
|
|
int peek;
|
|
struct strbuf continuation = STRBUF_INIT;
|
|
|
|
peek = fgetc(in); ungetc(peek, in);
|
|
if (peek != ' ' && peek != '\t')
|
|
break;
|
|
if (strbuf_getline(&continuation, in, '\n'))
|
|
break;
|
|
continuation.buf[0] = ' ';
|
|
strbuf_rtrim(&continuation);
|
|
strbuf_addbuf(line, &continuation);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static struct strbuf *decode_q_segment(const struct strbuf *q_seg, int rfc2047)
|
|
{
|
|
const char *in = q_seg->buf;
|
|
int c;
|
|
struct strbuf *out = xmalloc(sizeof(struct strbuf));
|
|
strbuf_init(out, q_seg->len);
|
|
|
|
while ((c = *in++) != 0) {
|
|
if (c == '=') {
|
|
int d = *in++;
|
|
if (d == '\n' || !d)
|
|
break; /* drop trailing newline */
|
|
strbuf_addch(out, (hexval(d) << 4) | hexval(*in++));
|
|
continue;
|
|
}
|
|
if (rfc2047 && c == '_') /* rfc2047 4.2 (2) */
|
|
c = 0x20;
|
|
strbuf_addch(out, c);
|
|
}
|
|
return out;
|
|
}
|
|
|
|
static struct strbuf *decode_b_segment(const struct strbuf *b_seg)
|
|
{
|
|
/* Decode in..ep, possibly in-place to ot */
|
|
int c, pos = 0, acc = 0;
|
|
const char *in = b_seg->buf;
|
|
struct strbuf *out = xmalloc(sizeof(struct strbuf));
|
|
strbuf_init(out, b_seg->len);
|
|
|
|
while ((c = *in++) != 0) {
|
|
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
|
|
continue; /* garbage */
|
|
switch (pos++) {
|
|
case 0:
|
|
acc = (c << 2);
|
|
break;
|
|
case 1:
|
|
strbuf_addch(out, (acc | (c >> 4)));
|
|
acc = (c & 15) << 4;
|
|
break;
|
|
case 2:
|
|
strbuf_addch(out, (acc | (c >> 2)));
|
|
acc = (c & 3) << 6;
|
|
break;
|
|
case 3:
|
|
strbuf_addch(out, (acc | c));
|
|
acc = pos = 0;
|
|
break;
|
|
}
|
|
}
|
|
return out;
|
|
}
|
|
|
|
static void convert_to_utf8(struct strbuf *line, const char *charset)
|
|
{
|
|
char *out;
|
|
|
|
if (!charset || !*charset)
|
|
return;
|
|
|
|
if (same_encoding(metainfo_charset, charset))
|
|
return;
|
|
out = reencode_string(line->buf, metainfo_charset, charset);
|
|
if (!out)
|
|
die("cannot convert from %s to %s",
|
|
charset, metainfo_charset);
|
|
strbuf_attach(line, out, strlen(out), strlen(out));
|
|
}
|
|
|
|
static int decode_header_bq(struct strbuf *it)
|
|
{
|
|
char *in, *ep, *cp;
|
|
struct strbuf outbuf = STRBUF_INIT, *dec;
|
|
struct strbuf charset_q = STRBUF_INIT, piecebuf = STRBUF_INIT;
|
|
int rfc2047 = 0;
|
|
|
|
in = it->buf;
|
|
while (in - it->buf <= it->len && (ep = strstr(in, "=?")) != NULL) {
|
|
int encoding;
|
|
strbuf_reset(&charset_q);
|
|
strbuf_reset(&piecebuf);
|
|
rfc2047 = 1;
|
|
|
|
if (in != ep) {
|
|
/*
|
|
* We are about to process an encoded-word
|
|
* that begins at ep, but there is something
|
|
* before the encoded word.
|
|
*/
|
|
char *scan;
|
|
for (scan = in; scan < ep; scan++)
|
|
if (!isspace(*scan))
|
|
break;
|
|
|
|
if (scan != ep || in == it->buf) {
|
|
/*
|
|
* We should not lose that "something",
|
|
* unless we have just processed an
|
|
* encoded-word, and there is only LWS
|
|
* before the one we are about to process.
|
|
*/
|
|
strbuf_add(&outbuf, in, ep - in);
|
|
}
|
|
}
|
|
/* E.g.
|
|
* ep : "=?iso-2022-jp?B?GyR...?= foo"
|
|
* ep : "=?ISO-8859-1?Q?Foo=FCbar?= baz"
|
|
*/
|
|
ep += 2;
|
|
|
|
if (ep - it->buf >= it->len || !(cp = strchr(ep, '?')))
|
|
goto decode_header_bq_out;
|
|
|
|
if (cp + 3 - it->buf > it->len)
|
|
goto decode_header_bq_out;
|
|
strbuf_add(&charset_q, ep, cp - ep);
|
|
|
|
encoding = cp[1];
|
|
if (!encoding || cp[2] != '?')
|
|
goto decode_header_bq_out;
|
|
ep = strstr(cp + 3, "?=");
|
|
if (!ep)
|
|
goto decode_header_bq_out;
|
|
strbuf_add(&piecebuf, cp + 3, ep - cp - 3);
|
|
switch (tolower(encoding)) {
|
|
default:
|
|
goto decode_header_bq_out;
|
|
case 'b':
|
|
dec = decode_b_segment(&piecebuf);
|
|
break;
|
|
case 'q':
|
|
dec = decode_q_segment(&piecebuf, 1);
|
|
break;
|
|
}
|
|
if (metainfo_charset)
|
|
convert_to_utf8(dec, charset_q.buf);
|
|
|
|
strbuf_addbuf(&outbuf, dec);
|
|
strbuf_release(dec);
|
|
free(dec);
|
|
in = ep + 2;
|
|
}
|
|
strbuf_addstr(&outbuf, in);
|
|
strbuf_reset(it);
|
|
strbuf_addbuf(it, &outbuf);
|
|
decode_header_bq_out:
|
|
strbuf_release(&outbuf);
|
|
strbuf_release(&charset_q);
|
|
strbuf_release(&piecebuf);
|
|
return rfc2047;
|
|
}
|
|
|
|
static void decode_header(struct strbuf *it)
|
|
{
|
|
if (decode_header_bq(it))
|
|
return;
|
|
/* otherwise "it" is a straight copy of the input.
|
|
* This can be binary guck but there is no charset specified.
|
|
*/
|
|
if (metainfo_charset)
|
|
convert_to_utf8(it, "");
|
|
}
|
|
|
|
static void decode_transfer_encoding(struct strbuf *line)
|
|
{
|
|
struct strbuf *ret;
|
|
|
|
switch (transfer_encoding) {
|
|
case TE_QP:
|
|
ret = decode_q_segment(line, 0);
|
|
break;
|
|
case TE_BASE64:
|
|
ret = decode_b_segment(line);
|
|
break;
|
|
case TE_DONTCARE:
|
|
default:
|
|
return;
|
|
}
|
|
strbuf_reset(line);
|
|
strbuf_addbuf(line, ret);
|
|
strbuf_release(ret);
|
|
free(ret);
|
|
}
|
|
|
|
static void handle_filter(struct strbuf *line);
|
|
|
|
static int find_boundary(void)
|
|
{
|
|
while (!strbuf_getline(&line, fin, '\n')) {
|
|
if (*content_top && is_multipart_boundary(&line))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int handle_boundary(void)
|
|
{
|
|
struct strbuf newline = STRBUF_INIT;
|
|
|
|
strbuf_addch(&newline, '\n');
|
|
again:
|
|
if (line.len >= (*content_top)->len + 2 &&
|
|
!memcmp(line.buf + (*content_top)->len, "--", 2)) {
|
|
/* we hit an end boundary */
|
|
/* pop the current boundary off the stack */
|
|
strbuf_release(*content_top);
|
|
free(*content_top);
|
|
*content_top = NULL;
|
|
|
|
/* technically won't happen as is_multipart_boundary()
|
|
will fail first. But just in case..
|
|
*/
|
|
if (--content_top < content) {
|
|
fprintf(stderr, "Detected mismatched boundaries, "
|
|
"can't recover\n");
|
|
exit(1);
|
|
}
|
|
handle_filter(&newline);
|
|
strbuf_release(&newline);
|
|
|
|
/* skip to the next boundary */
|
|
if (!find_boundary())
|
|
return 0;
|
|
goto again;
|
|
}
|
|
|
|
/* set some defaults */
|
|
transfer_encoding = TE_DONTCARE;
|
|
strbuf_reset(&charset);
|
|
|
|
/* slurp in this section's info */
|
|
while (read_one_header_line(&line, fin))
|
|
check_header(&line, p_hdr_data, 0);
|
|
|
|
strbuf_release(&newline);
|
|
/* replenish line */
|
|
if (strbuf_getline(&line, fin, '\n'))
|
|
return 0;
|
|
strbuf_addch(&line, '\n');
|
|
return 1;
|
|
}
|
|
|
|
static inline int patchbreak(const struct strbuf *line)
|
|
{
|
|
size_t i;
|
|
|
|
/* Beginning of a "diff -" header? */
|
|
if (!prefixcmp(line->buf, "diff -"))
|
|
return 1;
|
|
|
|
/* CVS "Index: " line? */
|
|
if (!prefixcmp(line->buf, "Index: "))
|
|
return 1;
|
|
|
|
/*
|
|
* "--- <filename>" starts patches without headers
|
|
* "---<sp>*" is a manual separator
|
|
*/
|
|
if (line->len < 4)
|
|
return 0;
|
|
|
|
if (!prefixcmp(line->buf, "---")) {
|
|
/* space followed by a filename? */
|
|
if (line->buf[3] == ' ' && !isspace(line->buf[4]))
|
|
return 1;
|
|
/* Just whitespace? */
|
|
for (i = 3; i < line->len; i++) {
|
|
unsigned char c = line->buf[i];
|
|
if (c == '\n')
|
|
return 1;
|
|
if (!isspace(c))
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int is_scissors_line(const struct strbuf *line)
|
|
{
|
|
size_t i, len = line->len;
|
|
int scissors = 0, gap = 0;
|
|
int first_nonblank = -1;
|
|
int last_nonblank = 0, visible, perforation = 0, in_perforation = 0;
|
|
const char *buf = line->buf;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
if (isspace(buf[i])) {
|
|
if (in_perforation) {
|
|
perforation++;
|
|
gap++;
|
|
}
|
|
continue;
|
|
}
|
|
last_nonblank = i;
|
|
if (first_nonblank < 0)
|
|
first_nonblank = i;
|
|
if (buf[i] == '-') {
|
|
in_perforation = 1;
|
|
perforation++;
|
|
continue;
|
|
}
|
|
if (i + 1 < len &&
|
|
(!memcmp(buf + i, ">8", 2) || !memcmp(buf + i, "8<", 2) ||
|
|
!memcmp(buf + i, ">%", 2) || !memcmp(buf + i, "%<", 2))) {
|
|
in_perforation = 1;
|
|
perforation += 2;
|
|
scissors += 2;
|
|
i++;
|
|
continue;
|
|
}
|
|
in_perforation = 0;
|
|
}
|
|
|
|
/*
|
|
* The mark must be at least 8 bytes long (e.g. "-- >8 --").
|
|
* Even though there can be arbitrary cruft on the same line
|
|
* (e.g. "cut here"), in order to avoid misidentification, the
|
|
* perforation must occupy more than a third of the visible
|
|
* width of the line, and dashes and scissors must occupy more
|
|
* than half of the perforation.
|
|
*/
|
|
|
|
visible = last_nonblank - first_nonblank + 1;
|
|
return (scissors && 8 <= visible &&
|
|
visible < perforation * 3 &&
|
|
gap * 2 < perforation);
|
|
}
|
|
|
|
static int handle_commit_msg(struct strbuf *line)
|
|
{
|
|
static int still_looking = 1;
|
|
|
|
if (!cmitmsg)
|
|
return 0;
|
|
|
|
if (still_looking) {
|
|
if (!line->len || (line->len == 1 && line->buf[0] == '\n'))
|
|
return 0;
|
|
}
|
|
|
|
if (use_inbody_headers && still_looking) {
|
|
still_looking = check_header(line, s_hdr_data, 0);
|
|
if (still_looking)
|
|
return 0;
|
|
} else
|
|
/* Only trim the first (blank) line of the commit message
|
|
* when ignoring in-body headers.
|
|
*/
|
|
still_looking = 0;
|
|
|
|
/* normalize the log message to UTF-8. */
|
|
if (metainfo_charset)
|
|
convert_to_utf8(line, charset.buf);
|
|
|
|
if (use_scissors && is_scissors_line(line)) {
|
|
int i;
|
|
if (fseek(cmitmsg, 0L, SEEK_SET))
|
|
die_errno("Could not rewind output message file");
|
|
if (ftruncate(fileno(cmitmsg), 0))
|
|
die_errno("Could not truncate output message file at scissors");
|
|
still_looking = 1;
|
|
|
|
/*
|
|
* We may have already read "secondary headers"; purge
|
|
* them to give ourselves a clean restart.
|
|
*/
|
|
for (i = 0; header[i]; i++) {
|
|
if (s_hdr_data[i])
|
|
strbuf_release(s_hdr_data[i]);
|
|
s_hdr_data[i] = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (patchbreak(line)) {
|
|
fclose(cmitmsg);
|
|
cmitmsg = NULL;
|
|
return 1;
|
|
}
|
|
|
|
fputs(line->buf, cmitmsg);
|
|
return 0;
|
|
}
|
|
|
|
static void handle_patch(const struct strbuf *line)
|
|
{
|
|
fwrite(line->buf, 1, line->len, patchfile);
|
|
patch_lines++;
|
|
}
|
|
|
|
static void handle_filter(struct strbuf *line)
|
|
{
|
|
static int filter = 0;
|
|
|
|
/* filter tells us which part we left off on */
|
|
switch (filter) {
|
|
case 0:
|
|
if (!handle_commit_msg(line))
|
|
break;
|
|
filter++;
|
|
case 1:
|
|
handle_patch(line);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void handle_body(void)
|
|
{
|
|
struct strbuf prev = STRBUF_INIT;
|
|
|
|
/* Skip up to the first boundary */
|
|
if (*content_top) {
|
|
if (!find_boundary())
|
|
goto handle_body_out;
|
|
}
|
|
|
|
do {
|
|
/* process any boundary lines */
|
|
if (*content_top && is_multipart_boundary(&line)) {
|
|
/* flush any leftover */
|
|
if (prev.len) {
|
|
handle_filter(&prev);
|
|
strbuf_reset(&prev);
|
|
}
|
|
if (!handle_boundary())
|
|
goto handle_body_out;
|
|
}
|
|
|
|
/* Unwrap transfer encoding */
|
|
decode_transfer_encoding(&line);
|
|
|
|
switch (transfer_encoding) {
|
|
case TE_BASE64:
|
|
case TE_QP:
|
|
{
|
|
struct strbuf **lines, **it, *sb;
|
|
|
|
/* Prepend any previous partial lines */
|
|
strbuf_insert(&line, 0, prev.buf, prev.len);
|
|
strbuf_reset(&prev);
|
|
|
|
/*
|
|
* This is a decoded line that may contain
|
|
* multiple new lines. Pass only one chunk
|
|
* at a time to handle_filter()
|
|
*/
|
|
lines = strbuf_split(&line, '\n');
|
|
for (it = lines; (sb = *it); it++) {
|
|
if (*(it + 1) == NULL) /* The last line */
|
|
if (sb->buf[sb->len - 1] != '\n') {
|
|
/* Partial line, save it for later. */
|
|
strbuf_addbuf(&prev, sb);
|
|
break;
|
|
}
|
|
handle_filter(sb);
|
|
}
|
|
/*
|
|
* The partial chunk is saved in "prev" and will be
|
|
* appended by the next iteration of read_line_with_nul().
|
|
*/
|
|
strbuf_list_free(lines);
|
|
break;
|
|
}
|
|
default:
|
|
handle_filter(&line);
|
|
}
|
|
|
|
} while (!strbuf_getwholeline(&line, fin, '\n'));
|
|
|
|
handle_body_out:
|
|
strbuf_release(&prev);
|
|
}
|
|
|
|
static void output_header_lines(FILE *fout, const char *hdr, const struct strbuf *data)
|
|
{
|
|
const char *sp = data->buf;
|
|
while (1) {
|
|
char *ep = strchr(sp, '\n');
|
|
int len;
|
|
if (!ep)
|
|
len = strlen(sp);
|
|
else
|
|
len = ep - sp;
|
|
fprintf(fout, "%s: %.*s\n", hdr, len, sp);
|
|
if (!ep)
|
|
break;
|
|
sp = ep + 1;
|
|
}
|
|
}
|
|
|
|
static void handle_info(void)
|
|
{
|
|
struct strbuf *hdr;
|
|
int i;
|
|
|
|
for (i = 0; header[i]; i++) {
|
|
/* only print inbody headers if we output a patch file */
|
|
if (patch_lines && s_hdr_data[i])
|
|
hdr = s_hdr_data[i];
|
|
else if (p_hdr_data[i])
|
|
hdr = p_hdr_data[i];
|
|
else
|
|
continue;
|
|
|
|
if (!memcmp(header[i], "Subject", 7)) {
|
|
if (!keep_subject) {
|
|
cleanup_subject(hdr);
|
|
cleanup_space(hdr);
|
|
}
|
|
output_header_lines(fout, "Subject", hdr);
|
|
} else if (!memcmp(header[i], "From", 4)) {
|
|
cleanup_space(hdr);
|
|
handle_from(hdr);
|
|
fprintf(fout, "Author: %s\n", name.buf);
|
|
fprintf(fout, "Email: %s\n", email.buf);
|
|
} else {
|
|
cleanup_space(hdr);
|
|
fprintf(fout, "%s: %s\n", header[i], hdr->buf);
|
|
}
|
|
}
|
|
fprintf(fout, "\n");
|
|
}
|
|
|
|
static int mailinfo(FILE *in, FILE *out, const char *msg, const char *patch)
|
|
{
|
|
int peek;
|
|
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;
|
|
}
|
|
|
|
p_hdr_data = xcalloc(MAX_HDR_PARSED, sizeof(*p_hdr_data));
|
|
s_hdr_data = xcalloc(MAX_HDR_PARSED, sizeof(*s_hdr_data));
|
|
|
|
do {
|
|
peek = fgetc(in);
|
|
} while (isspace(peek));
|
|
ungetc(peek, in);
|
|
|
|
/* process the email header */
|
|
while (read_one_header_line(&line, fin))
|
|
check_header(&line, p_hdr_data, 1);
|
|
|
|
handle_body();
|
|
handle_info();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int git_mailinfo_config(const char *var, const char *value, void *unused)
|
|
{
|
|
if (prefixcmp(var, "mailinfo."))
|
|
return git_default_config(var, value, unused);
|
|
if (!strcmp(var, "mailinfo.scissors")) {
|
|
use_scissors = git_config_bool(var, value);
|
|
return 0;
|
|
}
|
|
/* perhaps others here */
|
|
return 0;
|
|
}
|
|
|
|
static const char mailinfo_usage[] =
|
|
"git mailinfo [-k|-b] [-u | --encoding=<encoding> | -n] [--scissors | --no-scissors] msg patch < mail >info";
|
|
|
|
int cmd_mailinfo(int argc, const char **argv, const char *prefix)
|
|
{
|
|
const char *def_charset;
|
|
|
|
/* NEEDSWORK: might want to do the optional .git/ directory
|
|
* discovery
|
|
*/
|
|
git_config(git_mailinfo_config, NULL);
|
|
|
|
def_charset = get_commit_output_encoding();
|
|
metainfo_charset = def_charset;
|
|
|
|
while (1 < argc && argv[1][0] == '-') {
|
|
if (!strcmp(argv[1], "-k"))
|
|
keep_subject = 1;
|
|
else if (!strcmp(argv[1], "-b"))
|
|
keep_non_patch_brackets_in_subject = 1;
|
|
else if (!strcmp(argv[1], "-u"))
|
|
metainfo_charset = def_charset;
|
|
else if (!strcmp(argv[1], "-n"))
|
|
metainfo_charset = NULL;
|
|
else if (!prefixcmp(argv[1], "--encoding="))
|
|
metainfo_charset = argv[1] + 11;
|
|
else if (!strcmp(argv[1], "--scissors"))
|
|
use_scissors = 1;
|
|
else if (!strcmp(argv[1], "--no-scissors"))
|
|
use_scissors = 0;
|
|
else if (!strcmp(argv[1], "--no-inbody-headers"))
|
|
use_inbody_headers = 0;
|
|
else
|
|
usage(mailinfo_usage);
|
|
argc--; argv++;
|
|
}
|
|
|
|
if (argc != 3)
|
|
usage(mailinfo_usage);
|
|
|
|
return !!mailinfo(stdin, stdout, argv[1], argv[2]);
|
|
}
|