diff options
Diffstat (limited to 'ident.c')
| -rw-r--r-- | ident.c | 152 |
1 files changed, 130 insertions, 22 deletions
@@ -50,6 +50,54 @@ static void copy_gecos(const struct passwd *w, char *name, size_t sz) } +static int add_mailname_host(char *buf, size_t len) +{ + FILE *mailname; + + mailname = fopen("/etc/mailname", "r"); + if (!mailname) { + if (errno != ENOENT) + warning("cannot open /etc/mailname: %s", + strerror(errno)); + return -1; + } + if (!fgets(buf, len, mailname)) { + if (ferror(mailname)) + warning("cannot read /etc/mailname: %s", + strerror(errno)); + fclose(mailname); + return -1; + } + /* success! */ + fclose(mailname); + return 0; +} + +static void add_domainname(char *buf, size_t len) +{ + struct hostent *he; + size_t namelen; + const char *domainname; + + if (gethostname(buf, len)) { + warning("cannot get host name: %s", strerror(errno)); + strlcpy(buf, "(none)", len); + return; + } + namelen = strlen(buf); + if (memchr(buf, '.', namelen)) + return; + + he = gethostbyname(buf); + buf[namelen++] = '.'; + buf += namelen; + len -= namelen; + if (he && (domainname = strchr(he->h_name, '.'))) + strlcpy(buf, domainname + 1, len); + else + strlcpy(buf, "(none)", len); +} + static void copy_email(const struct passwd *pw) { /* @@ -61,35 +109,29 @@ static void copy_email(const struct passwd *pw) die("Your sysadmin must hate you!"); memcpy(git_default_email, pw->pw_name, len); git_default_email[len++] = '@'; - gethostname(git_default_email + len, sizeof(git_default_email) - len); - if (!strchr(git_default_email+len, '.')) { - struct hostent *he = gethostbyname(git_default_email + len); - char *domainname; - - len = strlen(git_default_email); - git_default_email[len++] = '.'; - if (he && (domainname = strchr(he->h_name, '.'))) - strlcpy(git_default_email + len, domainname + 1, - sizeof(git_default_email) - len); - else - strlcpy(git_default_email + len, "(none)", - sizeof(git_default_email) - len); - } + + if (!add_mailname_host(git_default_email + len, + sizeof(git_default_email) - len)) + return; /* read from "/etc/mailname" (Debian) */ + add_domainname(git_default_email + len, + sizeof(git_default_email) - len); } -static void setup_ident(void) +static void setup_ident(const char **name, const char **emailp) { struct passwd *pw = NULL; /* Get the name ("gecos") */ - if (!git_default_name[0]) { + if (!*name && !git_default_name[0]) { pw = getpwuid(getuid()); if (!pw) die("You don't exist. Go away!"); copy_gecos(pw, git_default_name, sizeof(git_default_name)); } + if (!*name) + *name = git_default_name; - if (!git_default_email[0]) { + if (!*emailp && !git_default_email[0]) { const char *email = getenv("EMAIL"); if (email && email[0]) { @@ -104,6 +146,8 @@ static void setup_ident(void) copy_email(pw); } } + if (!*emailp) + *emailp = git_default_email; /* And set the default date */ if (!git_default_date[0]) @@ -176,6 +220,74 @@ static int copy(char *buf, size_t size, int offset, const char *src) return offset; } +/* + * Reverse of fmt_ident(); given an ident line, split the fields + * to allow the caller to parse it. + * Signal a success by returning 0, but date/tz fields of the result + * can still be NULL if the input line only has the name/email part + * (e.g. reading from a reflog entry). + */ +int split_ident_line(struct ident_split *split, const char *line, int len) +{ + const char *cp; + size_t span; + int status = -1; + + memset(split, 0, sizeof(*split)); + + split->name_begin = line; + for (cp = line; *cp && cp < line + len; cp++) + if (*cp == '<') { + split->mail_begin = cp + 1; + break; + } + if (!split->mail_begin) + return status; + + for (cp = split->mail_begin - 2; line < cp; cp--) + if (!isspace(*cp)) { + split->name_end = cp + 1; + break; + } + if (!split->name_end) + return status; + + for (cp = split->mail_begin; cp < line + len; cp++) + if (*cp == '>') { + split->mail_end = cp; + break; + } + if (!split->mail_end) + return status; + + for (cp = split->mail_end + 1; cp < line + len && isspace(*cp); cp++) + ; + if (line + len <= cp) + goto person_only; + split->date_begin = cp; + span = strspn(cp, "0123456789"); + if (!span) + goto person_only; + split->date_end = split->date_begin + span; + for (cp = split->date_end; cp < line + len && isspace(*cp); cp++) + ; + if (line + len <= cp || (*cp != '+' && *cp != '-')) + goto person_only; + split->tz_begin = cp; + span = strspn(cp + 1, "0123456789"); + if (!span) + goto person_only; + split->tz_end = split->tz_begin + 1 + span; + return 0; + +person_only: + split->date_begin = NULL; + split->date_end = NULL; + split->tz_begin = NULL; + split->tz_end = NULL; + return 0; +} + static const char *env_hint = "\n" "*** Please tell me who you are.\n" @@ -199,11 +311,7 @@ const char *fmt_ident(const char *name, const char *email, int warn_on_no_name = (flag & IDENT_WARN_ON_NO_NAME); int name_addr_only = (flag & IDENT_NO_DATE); - setup_ident(); - if (!name) - name = git_default_name; - if (!email) - email = git_default_email; + setup_ident(&name, &email); if (!*name) { struct passwd *pw; |