int git_signature__parse(git_signature *sig, const char **buffer_out,
const char *buffer_end, const char *header)
{
const size_t header_len = strlen(header);
int name_length, email_length;
const char *buffer = *buffer_out;
const char *line_end, *name_end, *email_end;
long offset = 0, time;
memset(sig, 0x0, sizeof(git_signature));
line_end = memchr(buffer, '\n', buffer_end - buffer);
if (!line_end)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. No newline found");;
if (buffer + (header_len + 1) > line_end)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Signature too short");
if (memcmp(buffer, header, header_len) != 0)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Expected prefix '%s' doesn't match actual", header);
buffer += header_len;
/* Parse name */
if ((name_end = strstr(buffer, " <")) == NULL)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Can't find e-mail start");
name_length = name_end - buffer;
if (name_length <= 0)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Missing tagger name");
sig->name = git__malloc(name_length + 1);
if (sig->name == NULL)
return GIT_ENOMEM;
memcpy(sig->name, buffer, name_length);
sig->name[name_length] = 0;
buffer = name_end + 2;
if (buffer >= line_end)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Ended unexpectedly");
/* Parse email */
if ((email_end = strstr(buffer, "> ")) == NULL)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Can't find e-mail end");
email_length = email_end - buffer;
sig->email = git__malloc(email_length + 1);
if (sig->name == NULL)
return GIT_ENOMEM;
memcpy(sig->email, buffer, email_length);
sig->email[email_length] = 0;
buffer = email_end + 2;
if (buffer >= line_end)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Ended unexpectedly");
/* verify email */
if (strpbrk(sig->email, "><\n ") != NULL)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Malformed e-mail");
if (git__strtol32(&time, buffer, &buffer, 10) < GIT_SUCCESS)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Timestamp isn't a number");
sig->when.time = (time_t)time;
if (parse_timezone_offset(buffer, &offset) < GIT_SUCCESS)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Could not parse timezone offset");
sig->when.offset = offset;
*buffer_out = (line_end + 1);
return GIT_SUCCESS;
}
int git_signature__parse(git_signature *sig, char **buffer_out,
const char *buffer_end, const char *header)
{
const size_t header_len = strlen(header);
int name_length, email_length;
char *buffer = *buffer_out;
char *line_end, *name_end, *email_end;
int offset = 0;
memset(sig, 0x0, sizeof(git_signature));
line_end = memchr(buffer, '\n', buffer_end - buffer);
if (!line_end)
return GIT_EOBJCORRUPTED;
if (buffer + (header_len + 1) > line_end)
return GIT_EOBJCORRUPTED;
if (memcmp(buffer, header, header_len) != 0)
return GIT_EOBJCORRUPTED;
buffer += header_len;
/* Parse name */
if ((name_end = memchr(buffer, '<', buffer_end - buffer)) == NULL)
return GIT_EOBJCORRUPTED;
name_length = name_end - buffer - 1;
sig->name = git__malloc(name_length + 1);
memcpy(sig->name, buffer, name_length);
sig->name[name_length] = 0;
buffer = name_end + 1;
if (buffer >= line_end)
return GIT_EOBJCORRUPTED;
/* Parse email */
if ((email_end = memchr(buffer, '>', buffer_end - buffer)) == NULL)
return GIT_EOBJCORRUPTED;
email_length = email_end - buffer;
sig->email = git__malloc(email_length + 1);
memcpy(sig->email, buffer, email_length);
sig->email[email_length] = 0;
buffer = email_end + 1;
if (buffer >= line_end)
return GIT_EOBJCORRUPTED;
sig->when.time = strtol(buffer, &buffer, 10);
if (sig->when.time == 0)
return GIT_EOBJCORRUPTED;
if (parse_timezone_offset(buffer, &offset) < GIT_SUCCESS)
return GIT_EOBJCORRUPTED;
sig->when.offset = offset;
*buffer_out = (line_end + 1);
return GIT_SUCCESS;
}
