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math/mp.h, math/mp-jacobi.c: Whitespace fix.
[u/mdw/catacomb]
/
progs
/
pixie.c
diff --git
a/progs/pixie.c
b/progs/pixie.c
index
1198fcb
..
4380703
100644
(file)
--- a/
progs/pixie.c
+++ b/
progs/pixie.c
@@
-83,6
+83,7
@@
static unsigned flags = 0;
#define F_SYSLOG 1u
#define F_FETCH 2u
#define F_SYSLOG 1u
#define F_FETCH 2u
+#define F_REPLACE 4u
/*----- Event logging -----------------------------------------------------*/
/*----- Event logging -----------------------------------------------------*/
@@
-96,7
+97,7
@@
static unsigned flags = 0;
* Use: Writes out a timestamped log message.
*/
* Use: Writes out a timestamped log message.
*/
-static void pxlog(const char *p, ...)
+static void
PRINTF_LIKE(1, 2)
pxlog(const char *p, ...)
{
dstr d = DSTR_INIT;
va_list ap;
{
dstr d = DSTR_INIT;
va_list ap;
@@
-125,8
+126,7
@@
static void pxlog(const char *p, ...)
/* --- Data structures --- */
typedef struct phrase {
/* --- Data structures --- */
typedef struct phrase {
- struct phrase *next;
- struct phrase *prev;
+ struct phrase *next, *prev;
char *tag;
char *p;
unsigned long t;
char *tag;
char *p;
unsigned long t;
@@
-136,8
+136,21
@@
typedef struct phrase {
/* --- Variables --- */
/* --- Variables --- */
-#define P_ROOT ((phrase *)&p_root)
-static struct { phrase *next; phrase *prev; } p_root = { P_ROOT, P_ROOT };
+static phrase *p_head = 0, *p_tail = 0;
+
+/* --- Utility macros --- */
+
+#define P_LINKTAIL(p) do { \
+ (p)->next = 0; \
+ (p)->prev = p_tail; \
+ *(p_tail ? &p_tail->next : &p_head) = (p); \
+ p_tail = (p); \
+} while (0)
+
+#define P_UNLINK(p) do { \
+ *((p)->next ? &(p)->next->prev : &p_tail) = (p)->prev; \
+ *((p)->prev ? &(p)->prev->next : &p_head) = (p)->next; \
+} while (0)
/* --- @p_free@ --- *
*
/* --- @p_free@ --- *
*
@@
-154,8
+167,7
@@
static void p_free(phrase *p)
sel_rmtimer(&p->timer);
xfree(p->tag);
l_free(&lm, p->p);
sel_rmtimer(&p->timer);
xfree(p->tag);
l_free(&lm, p->p);
- p->next->prev = p->prev;
- p->prev->next = p->next;
+ P_UNLINK(p);
DESTROY(p);
}
DESTROY(p);
}
@@
-193,13
+205,13
@@
static void *p_alloc(size_t sz)
char *p;
if ((p = l_alloc(&lm, sz)) != 0)
return (p);
char *p;
if ((p = l_alloc(&lm, sz)) != 0)
return (p);
- if (
P_ROOT->next == P_ROOT
)
+ if (
!p_head
)
return (0);
if (verbose) {
pxlog("flushing passphrase `%s' to free up needed space",
p_head->tag);
}
return (0);
if (verbose) {
pxlog("flushing passphrase `%s' to free up needed space",
p_head->tag);
}
- p_free(
P_ROOT->next
);
+ p_free(
p_head
);
}
}
}
}
@@
-216,7
+228,7
@@
static phrase *p_find(const char *tag)
{
phrase *p;
{
phrase *p;
- for (p =
P_ROOT->next; p != P_ROOT
; p = p->next) {
+ for (p =
p_head; p
; p = p->next) {
if (strcmp(p->tag, tag) == 0) {
if (p->t) {
struct timeval tv;
if (strcmp(p->tag, tag) == 0) {
if (p->t) {
struct timeval tv;
@@
-225,12
+237,8
@@
static phrase *p_find(const char *tag)
tv.tv_sec += p->t;
sel_addtimer(&sel, &p->timer, &tv, p_timer, p);
}
tv.tv_sec += p->t;
sel_addtimer(&sel, &p->timer, &tv, p_timer, p);
}
- p->next->prev = p->prev;
- p->prev->next = p->next;
- p->next = P_ROOT;
- p->prev = P_ROOT->prev;
- P_ROOT->prev->next = p;
- P_ROOT->prev = p;
+ P_UNLINK(p);
+ P_LINKTAIL(p);
return (p);
}
}
return (p);
}
}
@@
-279,10
+287,7
@@
static phrase *p_add(const char *tag, const char *p, unsigned long t)
/* --- Link the block into the chain --- */
/* --- Link the block into the chain --- */
- pp->next = P_ROOT;
- pp->prev = P_ROOT->prev;
- P_ROOT->prev->next = pp;
- P_ROOT->prev = pp;
+ P_LINKTAIL(pp);
return (pp);
}
return (pp);
}
@@
-301,8
+306,8
@@
static void p_flush(const char *tag)
if (!tag && verbose > 1)
pxlog("flushing all passphrases");
if (!tag && verbose > 1)
pxlog("flushing all passphrases");
- p =
P_ROOT->next
;
- while (p
!= P_ROOT
) {
+ p =
p_head
;
+ while (p) {
phrase *pp = p->next;
if (!tag)
p_free(p);
phrase *pp = p->next;
if (!tag)
p_free(p);
@@
-583,21
+588,27
@@
static void pixserv_expire(struct timeval *tv, void *p)
* @const char *p@ = pointer to skeleton string
* @...@ = other arguments to fill in
*
* @const char *p@ = pointer to skeleton string
* @...@ = other arguments to fill in
*
- * Returns:
---
+ * Returns:
Zero on success, @-1@ on error.
*
* Use: Formats a string and emits it to the output file.
*/
*
* Use: Formats a string and emits it to the output file.
*/
-static
void
pixserv_write(pixserv *px, const char *p, ...)
+static
int PRINTF_LIKE(2, 3)
pixserv_write(pixserv *px, const char *p, ...)
{
dstr d = DSTR_INIT;
va_list ap;
{
dstr d = DSTR_INIT;
va_list ap;
+ int rc;
va_start(ap, p);
dstr_vputf(&d, p, &ap);
va_start(ap, p);
dstr_vputf(&d, p, &ap);
- write(px->fd, d.buf, d.len);
+
rc =
write(px->fd, d.buf, d.len);
va_end(ap);
dstr_destroy(&d);
va_end(ap);
dstr_destroy(&d);
+ if (rc < 0) {
+ pxlog("failed to write to client: %s (closing)", strerror(errno));
+ return (-1);
+ }
+ return (0);
}
/* --- @pixserv_timeout@ --- *
}
/* --- @pixserv_timeout@ --- *
@@
-650,13
+661,7
@@
static void pixserv_line(char *s, size_t len, void *p)
if (!(px->f & px_stdin))
sel_rmtimer(&px->timer);
if (!(px->f & px_stdin))
sel_rmtimer(&px->timer);
- if (!s) {
- if (px->fd != px->b.reader.fd)
- close(px->fd);
- selbuf_destroy(&px->b);
- close(px->b.reader.fd);
- return;
- }
+ if (!s) goto close;
/* --- Fiddle the timeout --- */
/* --- Fiddle the timeout --- */
@@
-677,17
+682,18
@@
static void pixserv_line(char *s, size_t len, void *p)
/* --- Handle a help request --- */
if (strcmp(q, "help") == 0) {
/* --- Handle a help request --- */
if (strcmp(q, "help") == 0) {
- pixserv_write(px, "\
+
if (
pixserv_write(px, "\
INFO Commands supported:\n\
INFO Commands supported:\n\
-INFO
HELP
\n\
-INFO
LIST
\n\
-INFO
PASS tag [expire]
\n\
-INFO
VERIFY tag [expire
]\n\
-INFO
FLUSH [tag]
\n\
-INFO
SET tag [expire] -- phrase
\n\
-INFO
QUIT
\n\
+INFO
flush [TAG]
\n\
+INFO
help
\n\
+INFO
list
\n\
+INFO
pass TAG [EXPIRE
]\n\
+INFO
quit
\n\
+INFO
set TAG [EXPIRE] -- PHRASE
\n\
+INFO
verify TAG [EXPIRE]
\n\
OK\n\
OK\n\
-");
+"))
+ goto close;
}
/* --- List the passphrases --- */
}
/* --- List the passphrases --- */
@@
-695,17
+701,19
@@
OK\n\
else if (strcmp(q, "list") == 0) {
phrase *p;
else if (strcmp(q, "list") == 0) {
phrase *p;
- for (p =
P_ROOT->next; p != P_ROOT
; p = p->next) {
- if (!p->t)
-
pixserv_write(px, "ITEM %s no-expire\n", p->tag)
;
- else {
+ for (p =
p_head; p
; p = p->next) {
+ if (!p->t)
{
+
if (pixserv_write(px, "ITEM %s no-expire\n", p->tag)) goto close
;
+
}
else {
struct timeval tv;
gettimeofday(&tv, 0);
TV_SUB(&tv, &p->timer.tv, &tv);
struct timeval tv;
gettimeofday(&tv, 0);
TV_SUB(&tv, &p->timer.tv, &tv);
- pixserv_write(px, "ITEM %s %i\n", p->tag, tv.tv_sec);
+ if (pixserv_write(px, "ITEM %s %lu\n",
+ p->tag, (unsigned long)tv.tv_sec))
+ goto close;
}
}
}
}
-
pixserv_write(px, "OK\n")
;
+
if (pixserv_write(px, "OK\n")) goto close
;
}
/* --- Request a passphrase --- */
}
/* --- Request a passphrase --- */
@@
-724,13
+732,14
@@
OK\n\
rc = p_get(&p, q, mode, t > timeout ? timeout : t);
switch (rc) {
case 0:
rc = p_get(&p, q, mode, t > timeout ? timeout : t);
switch (rc) {
case 0:
-
pixserv_write(px, "OK %s\n", p)
;
+
if (pixserv_write(px, "OK %s\n", p)) goto close
;
break;
case -1:
break;
case -1:
- pixserv_write(px, "FAIL error reading passphrase\n");
+ if (pixserv_write(px, "FAIL error reading passphrase\n"))
+ goto close;
break;
case +1:
break;
case +1:
-
pixserv_write(px, "MISSING\n")
;
+
if (pixserv_write(px, "MISSING\n")) goto close
;
break;
}
}
break;
}
}
@@
-741,7
+750,7
@@
OK\n\
else if (strcmp(q, "flush") == 0) {
q = str_getword(&s);
p_flush(q);
else if (strcmp(q, "flush") == 0) {
q = str_getword(&s);
p_flush(q);
-
pixserv_write(px, "OK\n")
;
+
if (pixserv_write(px, "OK\n")) goto close
;
}
/* --- Set a passphrase --- */
}
/* --- Set a passphrase --- */
@@
-749,24
+758,25
@@
OK\n\
else if (strcmp(q, "set") == 0) {
char *tag;
unsigned long t;
else if (strcmp(q, "set") == 0) {
char *tag;
unsigned long t;
- if ((tag = str_getword(&s)) == 0)
-
pixserv_write(px, "FAIL missing tag\n")
;
- else if ((q = str_getword(&s)) == 0)
-
pixserv_write(px, "FAIL no passphrase\n")
;
- else {
+ if ((tag = str_getword(&s)) == 0)
{
+
if (pixserv_write(px, "FAIL missing tag\n")) goto close
;
+ } else if ((q = str_getword(&s)) == 0) {
+
if (pixserv_write(px, "FAIL no passphrase\n")) goto close
;
+
}
else {
if (strcmp(q, "--") != 0) {
t = pixserv_timeout(q);
q = str_getword(&s);
} else
t = pixserv_timeout(0);
if (strcmp(q, "--") != 0) {
t = pixserv_timeout(q);
q = str_getword(&s);
} else
t = pixserv_timeout(0);
- if (!q)
- pixserv_write(px, "FAIL no passphrase\n");
- else if (strcmp(q, "--") != 0)
- pixserv_write(px, "FAIL rubbish found before passphrase\n");
- else {
+ if (!q) {
+ if (pixserv_write(px, "FAIL no passphrase\n")) goto close;
+ } else if (strcmp(q, "--") != 0) {
+ if (pixserv_write(px, "FAIL rubbish found before passphrase\n"))
+ goto close;
+ } else {
p_flush(tag);
p_add(tag, s, t);
p_flush(tag);
p_add(tag, s, t);
-
pixserv_write(px, "OK\n")
;
+
if (pixserv_write(px, "OK\n")) goto close
;
}
}
}
}
}
}
@@
-774,17
+784,26
@@
OK\n\
/* --- Shut the server down --- */
else if (strcmp(q, "quit") == 0) {
/* --- Shut the server down --- */
else if (strcmp(q, "quit") == 0) {
- if (verbose)
+ if (verbose)
{
pxlog("%s client requested shutdown",
px->f & px_stdin ? "local" : "remote");
pxlog("%s client requested shutdown",
px->f & px_stdin ? "local" : "remote");
- pixserv_write(px, "OK\n");
+ }
+ if (pixserv_write(px, "OK\n")) goto close;
exit(0);
}
/* --- Report an error for other commands --- */
exit(0);
}
/* --- Report an error for other commands --- */
- else
- pixserv_write(px, "FAIL unknown command `%s'\n", q);
+ else {
+ if (pixserv_write(px, "FAIL unknown command `%s'\n", q)) goto close;
+ }
+ return;
+
+close:
+ if (px->fd != px->b.reader.fd)
+ close(px->fd);
+ selbuf_destroy(&px->b);
+ close(px->b.reader.fd);
}
/* --- @pixserv_create@ --- *
}
/* --- @pixserv_create@ --- *
@@
-830,7
+849,7
@@
static void pixserv_accept(int fd, unsigned mode, void *p)
{
int nfd;
struct sockaddr_un sun;
{
int nfd;
struct sockaddr_un sun;
- s
ize
_t sunsz = sizeof(sun);
+ s
ocklen
_t sunsz = sizeof(sun);
if (mode != SEL_READ)
return;
if (mode != SEL_READ)
return;
@@
-987,13
+1006,17
@@
static void pix_setup(struct sockaddr_un *sun, size_t sz)
pxlog("stale socket found; removing it");
unlink(sun->sun_path);
close(fd);
pxlog("stale socket found; removing it");
unlink(sun->sun_path);
close(fd);
- } else {
+ } else
if (flags & F_REPLACE)
{
if (verbose)
pxlog("server already running; shutting it down");
if (verbose)
pxlog("server already running; shutting it down");
- write(fd, "QUIT\n", 5);
+ if (write(fd, "QUIT\n", 5) < 0) {
+ die(EXIT_FAILURE, "failed to shut down old server: %s",
+ strerror(errno));
+ }
sleep(1);
close(fd);
sleep(1);
close(fd);
- }
+ } else
+ die(EXIT_FAILURE, "pixie already running; not starting");
goto again;
}
chmod(sun->sun_path, 0600);
goto again;
}
chmod(sun->sun_path, 0600);
@@
-1034,7
+1057,8
@@
static void c_uline(char *s, size_t len, void *p)
c_flags |= cf_uclose;
} else {
s[len++] = '\n';
c_flags |= cf_uclose;
} else {
s[len++] = '\n';
- write(c_server.reader.fd, s, len);
+ if (write(c_server.reader.fd, s, len) < 0)
+ die(EXIT_FAILURE, "failed to read from stdin: %s", strerror(errno));
}
}
}
}
@@
-1105,8
+1129,8
@@
static void pix_client(struct sockaddr_un *sun, size_t sz, char *argv[])
DPUTS(&d, *argv++);
}
DPUTC(&d, '\n');
DPUTS(&d, *argv++);
}
DPUTC(&d, '\n');
- write(fd, d.buf, d.len);
-
shutdown(fd, 1
);
+ if (write(fd, d.buf, d.len) < 0 || shutdown(fd, 1))
+
die(EXIT_FAILURE, "failed to write command: %s", strerror(errno)
);
c_flags |= cf_uclose | cf_cooked;
dstr_destroy(&d);
}
c_flags |= cf_uclose | cf_cooked;
dstr_destroy(&d);
}
@@
-1166,6
+1190,7
@@
protect important keys. Options provided:\n\
-q, --quiet Emit fewer log messages.\n\
-v, --version Emit more log messages.\n\
-s, --socket=FILE Name the pixie's socket.\n\
-q, --quiet Emit fewer log messages.\n\
-v, --version Emit more log messages.\n\
-s, --socket=FILE Name the pixie's socket.\n\
+-r, --replace Replace existing pixie, if one is running.\n\
-c, --command=COMMAND Shell command to read a passphrase.\n\
-f, --fetch Fetch passphrases from the terminal.\n\
-t, --timeout=TIMEOUT Length of time to retain a passphrase in memory.\n\
-c, --command=COMMAND Shell command to read a passphrase.\n\
-f, --fetch Fetch passphrases from the terminal.\n\
-t, --timeout=TIMEOUT Length of time to retain a passphrase in memory.\n\
@@
-1240,6
+1265,7
@@
int main(int argc, char *argv[])
{ "passphrase", 0, 0, 'P' },
{ "verify-passphrase", 0, 0, '+' },
{ "socket", OPTF_ARGREQ, 0, 's' },
{ "passphrase", 0, 0, 'P' },
{ "verify-passphrase", 0, 0, '+' },
{ "socket", OPTF_ARGREQ, 0, 's' },
+ { "replace", 0, 0, 'r' },
{ "command", OPTF_ARGREQ, 0, 'c' },
{ "fetch", 0, 0, 'f' },
{ "timeout", OPTF_ARGREQ, 0, 't' },
{ "command", OPTF_ARGREQ, 0, 'c' },
{ "fetch", 0, 0, 'f' },
{ "timeout", OPTF_ARGREQ, 0, 't' },
@@
-1254,7
+1280,7
@@
int main(int argc, char *argv[])
{ 0, 0, 0, 0 }
};
{ 0, 0, 0, 0 }
};
- int i = mdwopt(argc, argv, "hVuqvCPs:c:ft:idl", opts, 0, 0, 0);
+ int i = mdwopt(argc, argv, "hVuqvCPs:
r
c:ft:idl", opts, 0, 0, 0);
if (i < 0)
break;
if (i < 0)
break;
@@
-1298,6
+1324,9
@@
int main(int argc, char *argv[])
case 's':
path = optarg;
break;
case 's':
path = optarg;
break;
+ case 'r':
+ flags |= F_REPLACE;
+ break;
case 't':
if ((timeout = pixserv_timeout(optarg)) == 0)
die(1, "bad timeout `%s'", optarg);
case 't':
if ((timeout = pixserv_timeout(optarg)) == 0)
die(1, "bad timeout `%s'", optarg);
@@
-1374,9
+1403,9
@@
int main(int argc, char *argv[])
dstr d = DSTR_INIT;
int rc = l_report(&lm, &d);
if (rc < 0)
dstr d = DSTR_INIT;
int rc = l_report(&lm, &d);
if (rc < 0)
- die(EXIT_FAILURE, d.buf);
+ die(EXIT_FAILURE,
"%s",
d.buf);
else if (rc && verbose) {
else if (rc && verbose) {
- pxlog(d.buf);
+ pxlog(
"%s",
d.buf);
pxlog("couldn't lock passphrase buffer");
}
dstr_destroy(&d);
pxlog("couldn't lock passphrase buffer");
}
dstr_destroy(&d);
@@
-1429,7
+1458,7
@@
int main(int argc, char *argv[])
}
}
#endif
}
}
#endif
-
chdir("/"
);
+
DISCARD(chdir("/")
);
setsid();
if (fork() != 0)
setsid();
if (fork() != 0)