-
/*
- * mhcachesbr.c -- routines to manipulate the MIME content cache
- *
- * $Id$
- *
- * This code is Copyright (c) 2002, by the authors of nmh. See the
- * COPYRIGHT file in the root directory of the nmh distribution for
- * complete copyright information.
- */
+** mhcachesbr.c -- routines to manipulate the MIME content cache
+**
+** This code is Copyright (c) 2002, by the authors of nmh. See the
+** COPYRIGHT file in the root directory of the nmh distribution for
+** complete copyright information.
+*/
#include <h/mh.h>
#include <fcntl.h>
extern int debugsw;
-extern pid_t xpid; /* mhshowsbr.c or mhbuildsbr.c */
+extern pid_t xpid; /* mhshowsbr.c or mhbuildsbr.c */
/* cache policies */
int rcachesw = CACHE_ASK;
int wcachesw = CACHE_ASK;
/*
- * Location of public and private cache. These must
- * be set before these routines are called.
- */
+** Location of public and private cache. These must
+** be set before these routines are called.
+*/
char *cache_public;
char *cache_private;
int pidcheck (int);
/* mhmisc.c */
-int part_ok (CT, int);
-int type_ok (CT, int);
-int make_intermediates (char *);
-void content_error (char *, CT, char *, ...);
-void flush_errors (void);
+int part_ok(CT, int);
+int type_ok(CT, int);
+int make_intermediates(char *);
+void content_error(char *, CT, char *, ...);
+void flush_errors(void);
/*
- * prototypes
- */
-void cache_all_messages (CT *);
-int find_cache (CT, int, int *, char *, char *, int);
+** prototypes
+*/
+void cache_all_messages(CT *);
+int find_cache(CT, int, int *, char *, char *, int);
/*
- * static prototypes
- */
-static void cache_content (CT);
-static int find_cache_aux (int, char *, char *, char *, int);
-static int find_cache_aux2 (char *, char *, char *, int);
+** static prototypes
+*/
+static void cache_content(CT);
+static int find_cache_aux(int, char *, char *, char *, int);
+static int find_cache_aux2(char *, char *, char *, int);
/*
- * Top level entry point to cache content
- * from a group of messages
- */
+** Top level entry point to cache content
+** from a group of messages
+*/
void
-cache_all_messages (CT *cts)
+cache_all_messages(CT *cts)
{
- CT ct, *ctp;
-
- for (ctp = cts; *ctp; ctp++) {
- ct = *ctp;
- if (type_ok (ct, 1)) {
- cache_content (ct);
- if (ct->c_fp) {
- fclose (ct->c_fp);
- ct->c_fp = NULL;
- }
- if (ct->c_ceclosefnx)
- (*ct->c_ceclosefnx) (ct);
+ CT ct, *ctp;
+
+ for (ctp = cts; *ctp; ctp++) {
+ ct = *ctp;
+ if (type_ok(ct, 1)) {
+ cache_content(ct);
+ if (ct->c_fp) {
+ fclose(ct->c_fp);
+ ct->c_fp = NULL;
+ }
+ if (ct->c_ceclosefnx)
+ (*ct->c_ceclosefnx) (ct);
+ }
}
- }
- flush_errors ();
+ flush_errors();
}
/*
- * Entry point to cache content from external sources.
- */
+** Entry point to cache content from external sources.
+*/
static void
-cache_content (CT ct)
+cache_content(CT ct)
{
- int cachetype;
- char *file, cachefile[BUFSIZ];
- CE ce = ct->c_cefile;
+ int cachetype;
+ char *file, cachefile[BUFSIZ];
+ CE ce = ct->c_cefile;
- if (!ct->c_id) {
- advise (NULL, "no %s: field in %s", ID_FIELD, ct->c_file);
- return;
- }
+ if (!ct->c_id) {
+ advise(NULL, "no %s: field in %s", ID_FIELD, ct->c_file);
+ return;
+ }
- if (!ce) {
- advise (NULL, "unable to decode %s", ct->c_file);
- return;
- }
+ if (!ce) {
+ advise(NULL, "unable to decode %s", ct->c_file);
+ return;
+ }
/* THIS NEEDS TO BE FIXED */
#if 0
- if (ct->c_ceopenfnx == openMail) {
- advise (NULL, "a radish may no know Greek, but I do...");
- return;
- }
+ if (ct->c_ceopenfnx == openMail) {
+ advise(NULL, "a radish may no know Greek, but I do...");
+ return;
+ }
#endif
- if (find_cache (NULL, wcachesw != CACHE_NEVER ? wcachesw : CACHE_ASK,
- &cachetype, ct->c_id, cachefile, sizeof(cachefile))
- == NOTOK) {
- advise (NULL, "unable to cache %s's contents", ct->c_file);
- return;
- }
- if (wcachesw != CACHE_NEVER && wcachesw != CACHE_ASK) {
- fflush (stdout);
- fprintf (stderr, "caching message %s as file %s\n", ct->c_file,
- cachefile);
- }
-
- if (ce->ce_file) {
- int mask = umask (cachetype ? ~m_gmprot () : 0222);
- FILE *fp;
+ if (find_cache(NULL, wcachesw != CACHE_NEVER ? wcachesw : CACHE_ASK,
+ &cachetype, ct->c_id, cachefile, sizeof(cachefile))
+ == NOTOK) {
+ advise(NULL, "unable to cache %s's contents", ct->c_file);
+ return;
+ }
+ if (wcachesw != CACHE_NEVER && wcachesw != CACHE_ASK) {
+ fflush(stdout);
+ fprintf(stderr, "caching message %s as file %s\n", ct->c_file,
+ cachefile);
+ }
- if (debugsw)
- fprintf (stderr, "caching by copying %s...\n", ce->ce_file);
-
- file = NULL;
- if ((*ct->c_ceopenfnx) (ct, &file) == NOTOK)
- goto reset_umask;
-
- if ((fp = fopen (cachefile, "w"))) {
- int cc;
- char buffer[BUFSIZ];
- FILE *gp = ce->ce_fp;
-
- fseek (gp, 0L, SEEK_SET);
-
- while ((cc = fread (buffer, sizeof(*buffer), sizeof(buffer), gp))
- > 0)
- fwrite (buffer, sizeof(*buffer), cc, fp);
- fflush (fp);
-
- if (ferror (gp)) {
- admonish (ce->ce_file, "error reading");
- unlink (cachefile);
- } else {
- if (ferror (fp)) {
- admonish (cachefile, "error writing");
- unlink (cachefile);
- }
- }
- fclose (fp);
- } else
- content_error (cachefile, ct, "unable to fopen for writing");
+ if (ce->ce_file) {
+ int mask = umask(cachetype ? ~m_gmprot() : 0222);
+ FILE *fp;
+
+ if (debugsw)
+ fprintf(stderr, "caching by copying %s...\n",
+ ce->ce_file);
+
+ file = NULL;
+ if ((*ct->c_ceopenfnx) (ct, &file) == NOTOK)
+ goto reset_umask;
+
+ if ((fp = fopen(cachefile, "w"))) {
+ int cc;
+ char buffer[BUFSIZ];
+ FILE *gp = ce->ce_fp;
+
+ fseek(gp, 0L, SEEK_SET);
+
+ while ((cc = fread(buffer, sizeof(*buffer),
+ sizeof(buffer), gp)) > 0)
+ fwrite(buffer, sizeof(*buffer), cc, fp);
+ fflush(fp);
+
+ if (ferror(gp)) {
+ admonish(ce->ce_file, "error reading");
+ unlink(cachefile);
+ } else {
+ if (ferror(fp)) {
+ admonish(cachefile, "error writing");
+ unlink(cachefile);
+ }
+ }
+ fclose(fp);
+ } else
+ content_error(cachefile, ct,
+ "unable to fopen for writing");
reset_umask:
- umask (mask);
- } else {
- if (debugsw)
- fprintf (stderr, "in place caching...\n");
+ umask(mask);
+ } else {
+ if (debugsw)
+ fprintf(stderr, "in place caching...\n");
- file = cachefile;
- if ((*ct->c_ceopenfnx) (ct, &file) != NOTOK)
- chmod (cachefile, cachetype ? m_gmprot () : 0444);
- }
+ file = cachefile;
+ if ((*ct->c_ceopenfnx) (ct, &file) != NOTOK)
+ chmod(cachefile, cachetype ? m_gmprot() : 0444);
+ }
}
int
-find_cache (CT ct, int policy, int *writing, char *id,
- char *buffer, int buflen)
+find_cache(CT ct, int policy, int *writing, char *id, char *buffer, int buflen)
{
- int status = NOTOK;
+ int status = NOTOK;
- if (id == NULL)
- return NOTOK;
- id = trimcpy (id);
-
- if (debugsw)
- fprintf (stderr, "find_cache %s(%d) %s %s\n", caches[policy].sw,
- policy, writing ? "writing" : "reading", id);
-
- switch (policy) {
- case CACHE_NEVER:
- default:
- break;
-
- case CACHE_ASK:
- case CACHE_PUBLIC:
- if (cache_private
- && !writing
- && find_cache_aux (writing ? 2 : 0, cache_private, id,
- buffer, buflen) == OK) {
- if (access (buffer, R_OK) != NOTOK) {
+ if (id == NULL)
+ return NOTOK;
+ id = trimcpy(id);
+
+ if (debugsw)
+ fprintf(stderr, "find_cache %s(%d) %s %s\n",
+ caches[policy].sw, policy,
+ writing ? "writing" : "reading", id);
+
+ switch (policy) {
+ case CACHE_NEVER:
+ default:
+ break;
+
+ case CACHE_ASK:
+ case CACHE_PUBLIC:
+ if (cache_private && !writing &&
+ find_cache_aux(writing ? 2 : 0,
+ cache_private, id, buffer, buflen)
+ == OK) {
+ if (access(buffer, R_OK) != NOTOK) {
got_private:
- if (writing)
- *writing = 1;
+ if (writing)
+ *writing = 1;
got_it:
- status = OK;
- break;
- }
- }
- if (cache_public
- && find_cache_aux (writing ? 1 : 0, cache_public, id,
- buffer, buflen) == OK) {
- if (writing || access (buffer, R_OK) != NOTOK) {
- if (writing)
- *writing = 0;
- goto got_it;
- }
- }
- break;
-
- case CACHE_PRIVATE:
- if (cache_private
- && find_cache_aux (writing ? 2 : 0, cache_private, id,
- buffer, buflen) == OK) {
- if (writing || access (buffer, R_OK) != NOTOK)
- goto got_private;
- }
- break;
-
- }
-
- if (status == OK && policy == CACHE_ASK) {
- int len, buflen;
- char *bp, query[BUFSIZ];
-
- if (xpid) {
- if (xpid < 0)
- xpid = -xpid;
- pidcheck (pidwait (xpid, NOTOK));
- xpid = 0;
- }
+ status = OK;
+ break;
+ }
+ }
+ if (cache_public && find_cache_aux(writing ? 1 : 0,
+ cache_public, id, buffer, buflen)
+ == OK) {
+ if (writing || access(buffer, R_OK) != NOTOK) {
+ if (writing)
+ *writing = 0;
+ goto got_it;
+ }
+ }
+ break;
+
+ case CACHE_PRIVATE:
+ if (cache_private && find_cache_aux(writing ? 2 : 0,
+ cache_private, id, buffer, buflen)
+ == OK) {
+ if (writing || access(buffer, R_OK) != NOTOK)
+ goto got_private;
+ }
+ break;
- /* Get buffer ready to go */
- bp = query;
- buflen = sizeof(query);
+ }
- /* Now, construct query */
- if (writing) {
- snprintf (bp, buflen, "Make cached, publically-accessible copy");
- } else {
- struct stat st;
+ if (status == OK && policy == CACHE_ASK) {
+ int len, buflen;
+ char *bp, query[BUFSIZ];
- snprintf (bp, buflen, "Use cached copy");
- len = strlen (bp);
- bp += len;
- buflen -= len;
+ if (xpid) {
+ if (xpid < 0)
+ xpid = -xpid;
+ pidcheck(pidwait(xpid, NOTOK));
+ xpid = 0;
+ }
- if (ct->c_partno) {
- snprintf (bp, buflen, " of content %s", ct->c_partno);
- len = strlen (bp);
+ /* Get buffer ready to go */
+ bp = query;
+ buflen = sizeof(query);
+
+ /* Now, construct query */
+ if (writing) {
+ snprintf(bp, buflen, "Make cached, publically-accessible copy");
+ } else {
+ struct stat st;
+
+ snprintf(bp, buflen, "Use cached copy");
+ len = strlen(bp);
+ bp += len;
+ buflen -= len;
+
+ if (ct->c_partno) {
+ snprintf(bp, buflen, " of content %s",
+ ct->c_partno);
+ len = strlen(bp);
+ bp += len;
+ buflen -= len;
+ }
+
+ stat(buffer, &st);
+ snprintf(bp, buflen, " (size %lu octets)",
+ (unsigned long) st.st_size);
+ }
+ len = strlen(bp);
bp += len;
buflen -= len;
- }
-
- stat (buffer, &st);
- snprintf (bp, buflen, " (size %lu octets)",
- (unsigned long) st.st_size);
- }
- len = strlen (bp);
- bp += len;
- buflen -= len;
- snprintf (bp, buflen, "\n in file %s? ", buffer);
+ snprintf(bp, buflen, "\n in file %s? ", buffer);
- /* Now, check answer */
- if (!getanswer (query))
- status = NOTOK;
- }
+ /* Now, check answer */
+ if (!getanswer(query))
+ status = NOTOK;
+ }
- if (status == OK && writing) {
- if (*writing && strchr(buffer, '/'))
- make_intermediates (buffer);
- unlink (buffer);
- }
+ if (status == OK && writing) {
+ if (*writing && strchr(buffer, '/'))
+ make_intermediates(buffer);
+ unlink(buffer);
+ }
- free (id);
- return status;
+ free(id);
+ return status;
}
static int
-find_cache_aux (int writing, char *directory, char *id,
- char *buffer, int buflen)
+find_cache_aux(int writing, char *directory, char *id, char *buffer,
+ int buflen)
{
- int mask, usemap;
- char mapfile[BUFSIZ], mapname[BUFSIZ];
- FILE *fp;
- static int partno, pid;
- static time_t clock = 0;
+ int mask, usemap;
+ char mapfile[BUFSIZ], mapname[BUFSIZ];
+ FILE *fp;
+ static int partno, pid;
+ static time_t clock = 0;
#ifdef BSD42
- usemap = strchr (id, '/') ? 1 : 0;
+ usemap = strchr(id, '/') ? 1 : 0;
#else
- usemap = 1;
+ usemap = 1;
#endif
- if (debugsw)
- fprintf (stderr, "find_cache_aux %s usemap=%d\n", directory, usemap);
+ if (debugsw)
+ fprintf(stderr, "find_cache_aux %s usemap=%d\n",
+ directory, usemap);
- snprintf (mapfile, sizeof(mapfile), "%s/cache.map", directory);
- if (find_cache_aux2 (mapfile, id, mapname, sizeof(mapname)) == OK)
- goto done_map;
+ snprintf(mapfile, sizeof(mapfile), "%s/cache.map", directory);
+ if (find_cache_aux2(mapfile, id, mapname, sizeof(mapname)) == OK)
+ goto done_map;
- if (!writing) {
- if (usemap)
- return NOTOK;
+ if (!writing) {
+ if (usemap)
+ return NOTOK;
use_raw:
- snprintf (buffer, buflen, "%s/%s", directory, id);
- return OK;
- }
-
- if (!usemap && access (mapfile, W_OK) == NOTOK)
- goto use_raw;
-
- if (clock != 0) {
- time_t now;
-
- time (&now);
- if (now > clock)
- clock = 0;
- } else {
- pid = getpid ();
- }
-
- if (clock == 0) {
- time (&clock);
- partno = 0;
- } else {
- if (partno > 0xff) {
- clock++;
- partno = 0;
+ snprintf(buffer, buflen, "%s/%s", directory, id);
+ return OK;
}
- }
- snprintf (mapname, sizeof(mapname), "%08x%04x%02x",
- (unsigned int) (clock & 0xffffffff),
- (unsigned int) (pid & 0xffff),
- (unsigned int) (partno++ & 0xff));
+ if (!usemap && access(mapfile, W_OK) == NOTOK)
+ goto use_raw;
- if (debugsw)
- fprintf (stderr, "creating mapping %s->%s\n", mapname, id);
+ if (clock != 0) {
+ time_t now;
- make_intermediates (mapfile);
- mask = umask (writing == 2 ? 0077 : 0);
- if (!(fp = lkfopen (mapfile, "a")) && errno == ENOENT) {
- int fd;
+ time(&now);
+ if (now > clock)
+ clock = 0;
+ } else {
+ pid = getpid();
+ }
- if ((fd = creat (mapfile, 0666)) != NOTOK) {
- close (fd);
- fp = lkfopen (mapfile, "a");
+ if (clock == 0) {
+ time(&clock);
+ partno = 0;
+ } else {
+ if (partno > 0xff) {
+ clock++;
+ partno = 0;
+ }
}
- }
- umask (mask);
- if (!fp)
- return NOTOK;
- fprintf (fp, "%s: %s\n", mapname, id);
- lkfclose (fp, mapfile);
+
+ snprintf(mapname, sizeof(mapname), "%08x%04x%02x",
+ (unsigned int) (clock & 0xffffffff),
+ (unsigned int) (pid & 0xffff),
+ (unsigned int) (partno++ & 0xff));
+
+ if (debugsw)
+ fprintf(stderr, "creating mapping %s->%s\n", mapname, id);
+
+ make_intermediates(mapfile);
+ mask = umask(writing == 2 ? 0077 : 0);
+ if (!(fp = lkfopen(mapfile, "a")) && errno == ENOENT) {
+ int fd;
+
+ if ((fd = creat(mapfile, 0666)) != NOTOK) {
+ close(fd);
+ fp = lkfopen(mapfile, "a");
+ }
+ }
+ umask(mask);
+ if (!fp)
+ return NOTOK;
+ fprintf(fp, "%s: %s\n", mapname, id);
+ lkfclose(fp, mapfile);
done_map:
- if (*mapname == '/')
- strncpy (buffer, mapname, buflen);
- else
- snprintf (buffer, buflen, "%s/%s", directory, mapname);
- if (debugsw)
- fprintf (stderr, "use %s\n", buffer);
-
- return OK;
+ if (*mapname == '/')
+ strncpy(buffer, mapname, buflen);
+ else
+ snprintf(buffer, buflen, "%s/%s", directory, mapname);
+ if (debugsw)
+ fprintf(stderr, "use %s\n", buffer);
+
+ return OK;
}
static int
-find_cache_aux2 (char *mapfile, char *id, char *mapname, int namelen)
+find_cache_aux2(char *mapfile, char *id, char *mapname, int namelen)
{
- int state;
- char buf[BUFSIZ], name[NAMESZ];
- FILE *fp;
-
- if (!(fp = lkfopen (mapfile, "r")))
- return NOTOK;
+ int state;
+ char buf[BUFSIZ], name[NAMESZ];
+ FILE *fp;
- for (state = FLD;;) {
- int result;
- char *cp, *dp;
-
- switch (state = m_getfld (state, name, buf, sizeof(buf), fp)) {
- case FLD:
- case FLDPLUS:
- case FLDEOF:
- strncpy (mapname, name, namelen);
- if (state != FLDPLUS)
- cp = buf;
- else {
- cp = add (buf, NULL);
- while (state == FLDPLUS) {
- state = m_getfld (state, name, buf, sizeof(buf), fp);
- cp = add (buf, cp);
- }
+ if (!(fp = lkfopen(mapfile, "r")))
+ return NOTOK;
+
+ for (state = FLD;;) {
+ int result;
+ char *cp, *dp;
+
+ switch (state = m_getfld(state, name, buf, sizeof(buf), fp)) {
+ case FLD:
+ case FLDPLUS:
+ case FLDEOF:
+ strncpy(mapname, name, namelen);
+ if (state != FLDPLUS)
+ cp = buf;
+ else {
+ cp = add(buf, NULL);
+ while (state == FLDPLUS) {
+ state = m_getfld(state, name, buf, sizeof(buf), fp);
+ cp = add(buf, cp);
+ }
+ }
+ dp = trimcpy(cp);
+ if (cp != buf)
+ free(cp);
+ if (debugsw)
+ fprintf(stderr, "compare %s to %s <- %s\n", id, dp, mapname);
+ result = strcmp(id, dp);
+ free(dp);
+ if (result == 0) {
+ lkfclose(fp, mapfile);
+ return OK;
+ }
+ if (state != FLDEOF)
+ continue;
+ /* else fall... */
+
+ case BODY:
+ case BODYEOF:
+ case FILEEOF:
+ default:
+ break;
}
- dp = trimcpy (cp);
- if (cp != buf)
- free (cp);
- if (debugsw)
- fprintf (stderr, "compare %s to %s <- %s\n", id, dp,
- mapname);
- result = strcmp (id, dp);
- free (dp);
- if (result == 0) {
- lkfclose (fp, mapfile);
- return OK;
- }
- if (state != FLDEOF)
- continue;
- /* else fall... */
-
- case BODY:
- case BODYEOF:
- case FILEEOF:
- default:
break;
}
- break;
- }
- lkfclose (fp, mapfile);
- return NOTOK;
+ lkfclose(fp, mapfile);
+ return NOTOK;
}
projects / mmh / blobdiff