#include <h/mh.h>
#include <fcntl.h>
-#include <h/signals.h>
#include <h/md5.h>
#include <h/mts.h>
#include <h/tws.h>
#include <h/mime.h>
#include <h/mhparse.h>
#include <h/utils.h>
+#ifdef HAVE_ICONV
+# include <iconv.h>
+#endif /* HAVE_ICONV */
extern int debugsw;
-extern pid_t xpid; /* mhshowsbr.c */
-
/* cache policies */
extern int rcachesw; /* mhcachesbr.c */
extern int wcachesw; /* mhcachesbr.c */
* 1) Instruct parser not to detect invalid Content-Transfer-Encoding
* in a multipart.
* 2) Suppress the warning about bogus multipart content, and report it.
+ * 3) Suppress the warning about extraneous trailing ';' in header parameter
+ * lists, and report it.
*/
int skip_mp_cte_check;
int suppress_bogus_mp_content_warning;
int bogus_mp_content;
+int suppress_extraneous_trailing_semicolon_warning;
+int extraneous_trailing_semicolon;
+int suppress_multiple_mime_version_warning = 1;
+
+/* list of preferred type/subtype pairs, for -prefer */
+char *preferred_types[NPREFS],
+ *preferred_subtypes[NPREFS];
+int npreferred;
+
/*
* Structures for TEXT messages
{ "alternative", MULTI_ALTERNATE },
{ "digest", MULTI_DIGEST },
{ "parallel", MULTI_PARALLEL },
+ { "related", MULTI_RELATED },
{ NULL, MULTI_UNKNOWN } /* this one must be last! */
};
int find_cache (CT, int, int *, char *, char *, int);
/* mhmisc.c */
-int part_ok (CT, int);
+int part_ok (CT);
int type_ok (CT, int);
void content_error (char *, CT, char *, ...);
static int InitGeneric (CT);
static int InitText (CT);
static int InitMultiPart (CT);
-void reverse_parts (CT);
+static void reverse_parts (CT);
+static void prefer_parts(CT ct);
static int InitMessage (CT);
static int InitApplication (CT);
static int init_encoding (CT, OpenCEFunc);
static int get_leftover_mp_content (CT, int);
static int InitURL (CT);
static int openURL (CT, char **);
-static size_t param_len(PM, int, size_t, int *);
+static int parse_header_attrs (const char *, const char *, char **, PM *,
+ PM *, char **);
+static size_t param_len(PM, int, size_t, int *, int *, size_t *);
static size_t encode_param(PM, char *, size_t, size_t, size_t, int);
static size_t normal_param(PM, char *, size_t, size_t, size_t);
static int get_dispo (char *, CT, int);
};
-int
-pidcheck (int status)
-{
- if ((status & 0xff00) == 0xff00 || (status & 0x007f) != SIGQUIT)
- return status;
-
- fflush (stdout);
- fflush (stderr);
- done (1);
- return 1;
-}
-
-
/*
* Main entry point for parsing a MIME message or file.
* It returns the Content structure for the top level
char buffer[BUFSIZ];
FILE *fp;
CT ct;
+ size_t n;
/*
* Check if file is actually standard input
}
file = add (tfile, NULL);
- while (fgets (buffer, sizeof(buffer), stdin))
- fputs (buffer, fp);
+ while ((n = fread(buffer, 1, sizeof(buffer), stdin)) > 0) {
+ if (fwrite(buffer, 1, n, fp) != n) {
+ (void) m_unlink (file);
+ advise (file, "error copying to temporary file");
+ return NULL;
+ }
+ }
fflush (fp);
if (ferror (stdin)) {
m_getfld_state_t gstate = 0;
/* allocate the content structure */
- if (!(ct = (CT) calloc (1, sizeof(*ct))))
+ if (!(ct = (CT) mh_xcalloc (1, sizeof(*ct))))
adios (NULL, "out of memory");
ct->c_fp = in;
if (!strcasecmp (hp->name, VRSN_FIELD)) {
int ucmp;
char c, *cp, *dp;
+ char *vrsn;
- if (ct->c_vrsn) {
- advise (NULL, "message %s has multiple %s: fields",
- ct->c_file, VRSN_FIELD);
- goto next_header;
- }
- ct->c_vrsn = add (hp->value, NULL);
+ vrsn = add (hp->value, NULL);
/* Now, cleanup this field */
- cp = ct->c_vrsn;
+ cp = vrsn;
while (isspace ((unsigned char) *cp))
cp++;
admonish (NULL, "message %s has unknown value for %s: field (%s)",
ct->c_file, VRSN_FIELD, cp);
}
+ if (!ct->c_vrsn) {
+ ct->c_vrsn = vrsn;
+ } else {
+ if (! suppress_multiple_mime_version_warning)
+ advise (NULL, "message %s has multiple %s: fields",
+ ct->c_file, VRSN_FIELD);
+ free(vrsn);
+ }
}
else if (!strcasecmp (hp->name, TYPE_FIELD)) {
/* Get Content-Type field */
}
-/* Make sure that buf contains at least one appearance of name,
- followed by =. If not, insert both name and value, just after
- first semicolon, if any. Note that name should not contain a
- trailing =. And quotes will be added around the value. Typical
- usage: make sure that a Content-Disposition header contains
- filename="foo". If it doesn't and value does, use value from
- that. */
-static char *
-incl_name_value (char *buf, char *name, char *value) {
- char *newbuf = buf;
-
- /* Assume that name is non-null. */
- if (buf && value) {
- char *name_plus_equal = concat (name, "=", NULL);
-
- if (! strstr (buf, name_plus_equal)) {
- char *insertion;
- char *cp, *prefix, *suffix;
-
- /* Trim trailing space, esp. newline. */
- for (cp = &buf[strlen (buf) - 1];
- cp >= buf && isspace ((unsigned char) *cp);
- --cp) {
- *cp = '\0';
- }
-
- insertion = concat ("; ", name, "=", "\"", value, "\"", NULL);
-
- /* Insert at first semicolon, if any. If none, append to
- end. */
- prefix = add (buf, NULL);
- if ((cp = strchr (prefix, ';'))) {
- suffix = concat (cp, NULL);
- *cp = '\0';
- newbuf = concat (prefix, insertion, suffix, "\n", NULL);
- free (suffix);
- } else {
- /* Append to end. */
- newbuf = concat (buf, insertion, "\n", NULL);
- }
-
- free (prefix);
- free (insertion);
- free (buf);
- }
-
- free (name_plus_equal);
- }
-
- return newbuf;
-}
-
-/* Extract just name_suffix="foo", if any, from value. If there isn't
- one, return the entire value. Note that, for example, a name_suffix
- of name will match filename="foo", and return foo. */
-static char *
-extract_name_value (char *name_suffix, char *value) {
- char *extracted_name_value = value;
- char *name_suffix_plus_quote = concat (name_suffix, "=\"", NULL);
- char *name_suffix_equals = strstr (value, name_suffix_plus_quote);
- char *cp;
-
- free (name_suffix_plus_quote);
- if (name_suffix_equals) {
- char *name_suffix_begin;
-
- /* Find first \". */
- for (cp = name_suffix_equals; *cp != '"'; ++cp) /* empty */;
- name_suffix_begin = ++cp;
- /* Find second \". */
- for (; *cp != '"'; ++cp) /* empty */;
-
- extracted_name_value = mh_xmalloc (cp - name_suffix_begin + 1);
- memcpy (extracted_name_value,
- name_suffix_begin,
- cp - name_suffix_begin);
- extracted_name_value[cp - name_suffix_begin] = '\0';
- }
-
- return extracted_name_value;
-}
-
/*
* Parse Content-Type line and (if `magic' is non-zero) mhbuild composition
* directives. Fills in the information of the CTinfo structure.
have a *filename=, extract it from the magic contents.
The r1bindex call skips any leading directory
components. */
- if (ct->c_dispo)
- ct->c_dispo =
- incl_name_value (ct->c_dispo,
- "filename",
- r1bindex (extract_name_value ("name",
- ci->
- ci_magic),
- '/'));
+ if (ct->c_dispo_type &&
+ !get_param(ct->c_dispo_first, "filename", '_', 1)) {
+ add_param(&ct->c_dispo_first, &ct->c_dispo_last, "filename",
+ r1bindex(ci->ci_magic, '/'), 0);
+ }
}
else
advise (NULL,
char *chset = NULL;
char *cp;
PM pm;
- struct k2v *kv;
struct text *t;
CI ci = &ct->c_ctinfo;
ci->ci_subtype = add ("plain", ci->ci_subtype);
/* match subtype */
- for (kv = SubText; kv->kv_key; kv++)
- if (!strcasecmp (ci->ci_subtype, kv->kv_key))
- break;
- ct->c_subtype = kv->kv_value;
+ ct->c_subtype = ct_str_subtype (CT_TEXT, ci->ci_subtype);
/* allocate text character set structure */
- if ((t = (struct text *) calloc (1, sizeof(*t))) == NULL)
+ if ((t = (struct text *) mh_xcalloc (1, sizeof(*t))) == NULL)
adios (NULL, "out of memory");
ct->c_ctparams = (void *) t;
long last, pos;
char *cp, *dp;
PM pm;
- char *bp, buffer[BUFSIZ];
+ char *bp;
+ char *bufp = NULL;
+ size_t buflen;
+ ssize_t gotlen;
struct multipart *m;
- struct k2v *kv;
struct part *part, **next;
CI ci = &ct->c_ctinfo;
CT p;
admonish (NULL,
"\"%s/%s\" type in message %s must be encoded in\n"
- "7bit, 8bit, or binary, per RFC 2045 (6.4). One workaround "
- "is to\nmanually edit the file and change the \"%s\"\n"
+ "7bit, 8bit, or binary, per RFC 2045 (6.4). "
+ "mhfixmsg -fixcte can fix it, or\n"
+ "manually edit the file and change the \"%s\"\n"
"Content-Transfer-Encoding to one of those. For now",
ci->ci_type, ci->ci_subtype, ct->c_file, bp);
free (cte);
}
/* match subtype */
- for (kv = SubMultiPart; kv->kv_key; kv++)
- if (!strcasecmp (ci->ci_subtype, kv->kv_key))
- break;
- ct->c_subtype = kv->kv_value;
+ ct->c_subtype = ct_str_subtype (CT_MULTIPART, ci->ci_subtype);
/*
* Check for "boundary" parameter, which is
}
/* allocate primary structure for multipart info */
- if ((m = (struct multipart *) calloc (1, sizeof(*m))) == NULL)
+ if ((m = (struct multipart *) mh_xcalloc (1, sizeof(*m))) == NULL)
adios (NULL, "out of memory");
ct->c_ctparams = (void *) m;
part = NULL;
inout = 1;
- while (fgets (buffer, sizeof(buffer) - 1, fp)) {
+ while ((gotlen = getline(&bufp, &buflen, fp)) != -1) {
if (pos > last)
break;
- pos += strlen (buffer);
- if (buffer[0] != '-' || buffer[1] != '-')
+ pos += gotlen;
+ if (bufp[0] != '-' || bufp[1] != '-')
continue;
if (inout) {
- if (strcmp (buffer + 2, m->mp_start))
+ if (strcmp (bufp + 2, m->mp_start))
continue;
next_part:
- if ((part = (struct part *) calloc (1, sizeof(*part))) == NULL)
+ if ((part = (struct part *) mh_xcalloc (1, sizeof(*part))) == NULL)
adios (NULL, "out of memory");
*next = part;
next = &part->mp_next;
if (!(p = get_content (fp, ct->c_file,
ct->c_subtype == MULTI_DIGEST ? -1 : 0))) {
+ free(bufp);
ct->c_fp = NULL;
return NOTOK;
}
fseek (fp, pos, SEEK_SET);
inout = 0;
} else {
- if (strcmp (buffer + 2, m->mp_start) == 0) {
+ if (strcmp (bufp + 2, m->mp_start) == 0) {
inout = 1;
end_part:
p = part->mp_part;
- p->c_end = ftell(fp) - (strlen(buffer) + 1);
+ p->c_end = ftell(fp) - (gotlen + 1);
if (p->c_end < p->c_begin)
p->c_begin = p->c_end;
if (inout)
goto next_part;
goto last_part;
} else {
- if (strcmp (buffer + 2, m->mp_stop) == 0)
+ if (strcmp (bufp + 2, m->mp_stop) == 0)
goto end_part;
}
}
last_part:
/* reverse the order of the parts for multipart/alternative */
- if (ct->c_subtype == MULTI_ALTERNATE)
+ if (ct->c_subtype == MULTI_ALTERNATE) {
reverse_parts (ct);
+ prefer_parts (ct);
+ }
/*
* label all subparts with part number, and
/* initialize the content of the subparts */
if (p->c_ctinitfnx && (*p->c_ctinitfnx) (p) == NOTOK) {
+ free(bufp);
fclose (ct->c_fp);
ct->c_fp = NULL;
return NOTOK;
get_leftover_mp_content (ct, 1);
get_leftover_mp_content (ct, 0);
+ free(bufp);
fclose (ct->c_fp);
ct->c_fp = NULL;
return OK;
/*
- * reverse the order of the parts of a multipart/alternative
+ * reverse the order of the parts of a multipart/alternative,
+ * presumably to put the "most favored" alternative first, for
+ * ease of choosing/displaying it later on. from a mail message on
+ * nmh-workers, from kenh:
+ * "Stock" MH 6.8.5 did not have a reverse_parts() function, but I
+ * see code in mhn that did the same thing... Acccording to the RCS
+ * logs, that code was around from the initial checkin of mhn.c by
+ * John Romine in 1992, which is as far back as we have."
*/
-
-void
+static void
reverse_parts (CT ct)
{
struct multipart *m = (struct multipart *) ct->c_ctparams;
}
}
+static void
+move_preferred_part (CT ct, char *type, char *subtype)
+{
+ struct multipart *m = (struct multipart *) ct->c_ctparams;
+ struct part *part, *prev, *head, *nhead, *ntail;
+ struct part h, n;
+ CI ci;
+
+ /* move the matching part(s) to the head of the list: walk the
+ * list of parts, move matching parts to a new list (maintaining
+ * their order), and finally, concatenate the old list onto the
+ * new.
+ */
+
+ head = &h;
+ nhead = &n;
+
+ head->mp_next = m->mp_parts;
+ nhead->mp_next = NULL;
+ ntail = nhead;
+
+ prev = head;
+ part = head->mp_next;
+ while (part != NULL) {
+ ci = &part->mp_part->c_ctinfo;
+ if (!strcasecmp(ci->ci_type, type) &&
+ (!subtype || !strcasecmp(ci->ci_subtype, subtype))) {
+ prev->mp_next = part->mp_next;
+ part->mp_next = NULL;
+ ntail->mp_next = part;
+ ntail = part;
+ part = prev->mp_next;
+ } else {
+ prev = part;
+ part = prev->mp_next;
+ }
+ }
+ ntail->mp_next = head->mp_next;
+ m->mp_parts = nhead->mp_next;
+
+}
+
+/*
+ * move parts that match the user's preferences (-prefer) to the head
+ * of the line. process preferences in reverse so first one given
+ * ends up first in line
+ */
+static void
+prefer_parts(CT ct)
+{
+ int i;
+ for (i = npreferred-1; i >= 0; i--)
+ move_preferred_part(ct, preferred_types[i], preferred_subtypes[i]);
+}
+
+
+
+/* parse_mime() arranges alternates in reverse (priority) order. This
+ function can be used to reverse them back. This will put, for
+ example, a text/plain part before a text/html part in a
+ multipart/alternative part, for example, where it belongs. */
+void
+reverse_alternative_parts (CT ct) {
+ if (ct->c_type == CT_MULTIPART) {
+ struct multipart *m = (struct multipart *) ct->c_ctparams;
+ struct part *part;
+
+ if (ct->c_subtype == MULTI_ALTERNATE) {
+ reverse_parts (ct);
+ }
+
+ /* And call recursively on each part of a multipart. */
+ for (part = m->mp_parts; part; part = part->mp_next) {
+ reverse_alternative_parts (part->mp_part);
+ }
+ }
+}
+
/*
* MESSAGE
static int
InitMessage (CT ct)
{
- struct k2v *kv;
CI ci = &ct->c_ctinfo;
if ((ct->c_encoding != CE_7BIT) && (ct->c_encoding != CE_8BIT)) {
ci->ci_subtype = add ("rfc822", ci->ci_subtype);
/* match subtype */
- for (kv = SubMessage; kv->kv_key; kv++)
- if (!strcasecmp (ci->ci_subtype, kv->kv_key))
- break;
- ct->c_subtype = kv->kv_value;
+ ct->c_subtype = ct_str_subtype (CT_MESSAGE, ci->ci_subtype);
switch (ct->c_subtype) {
case MESSAGE_RFC822:
PM pm;
struct partial *p;
- if ((p = (struct partial *) calloc (1, sizeof(*p))) == NULL)
+ if ((p = (struct partial *) mh_xcalloc (1, sizeof(*p))) == NULL)
adios (NULL, "out of memory");
ct->c_ctparams = (void *) p;
CT p;
FILE *fp;
- if ((e = (struct exbody *) calloc (1, sizeof(*e))) == NULL)
+ if ((e = (struct exbody *) mh_xcalloc (1, sizeof(*e))) == NULL)
adios (NULL, "out of memory");
ct->c_ctparams = (void *) e;
static int
InitApplication (CT ct)
{
- struct k2v *kv;
CI ci = &ct->c_ctinfo;
/* match subtype */
- for (kv = SubApplication; kv->kv_key; kv++)
- if (!strcasecmp (ci->ci_subtype, kv->kv_key))
- break;
- ct->c_subtype = kv->kv_value;
+ ct->c_subtype = ct_str_subtype (CT_APPLICATION, ci->ci_subtype);
return OK;
}
/* sbeck@cise.ufl.edu -- handle suffixes */
ci = &ct->c_ctinfo;
- snprintf (buffer, sizeof(buffer), "%s-suffix-%s/%s",
- invo_name, ci->ci_type, ci->ci_subtype);
- cp = context_find (buffer);
- if (cp == NULL || *cp == '\0') {
- snprintf (buffer, sizeof(buffer), "%s-suffix-%s", invo_name,
- ci->ci_type);
- cp = context_find (buffer);
- }
- if (cp != NULL && *cp != '\0') {
+ if ((cp = context_find_by_type ("suffix", ci->ci_type, ci->ci_subtype))) {
if (ce->ce_unlink) {
/* Create temporary file with filename extension. */
if ((ce->ce_file = m_mktemps(invo_name, cp, NULL, NULL)) == NULL) {
{
int cc, digested, len, quoted, own_ct_fp = 0;
char *cp, *ep;
- char buffer[BUFSIZ];
+ char *bufp = NULL;
+ size_t buflen;
+ ssize_t gotlen;
unsigned char mask;
CE ce = &ct->c_cefile;
/* sbeck -- handle suffixes */
/* sbeck@cise.ufl.edu -- handle suffixes */
ci = &ct->c_ctinfo;
- snprintf (buffer, sizeof(buffer), "%s-suffix-%s/%s",
- invo_name, ci->ci_type, ci->ci_subtype);
- cp = context_find (buffer);
- if (cp == NULL || *cp == '\0') {
- snprintf (buffer, sizeof(buffer), "%s-suffix-%s", invo_name,
- ci->ci_type);
- cp = context_find (buffer);
- }
- if (cp != NULL && *cp != '\0') {
+ if ((cp = context_find_by_type ("suffix", ci->ci_type, ci->ci_subtype))) {
if (ce->ce_unlink) {
/* Create temporary file with filename extension. */
if ((ce->ce_file = m_mktemps(invo_name, cp, NULL, NULL)) == NULL) {
fseek (ct->c_fp, ct->c_begin, SEEK_SET);
while (len > 0) {
- if (fgets (buffer, sizeof(buffer) - 1, ct->c_fp) == NULL) {
+ if ((gotlen = getline(&bufp, &buflen, ct->c_fp)) == -1) {
content_error (NULL, ct, "premature eof");
goto clean_up;
}
- if ((cc = strlen (buffer)) > len)
+ if ((cc = gotlen) > len)
cc = len;
len -= cc;
- for (ep = (cp = buffer) + cc - 1; cp <= ep; ep--)
+ for (ep = (cp = bufp) + cc - 1; cp <= ep; ep--)
if (!isspace ((unsigned char) *ep))
break;
*++ep = '\n', ep++;
fclose (ct->c_fp);
ct->c_fp = NULL;
}
+ free (bufp);
return fileno (ce->ce_fp);
clean_up:
fclose (ct->c_fp);
ct->c_fp = NULL;
}
+ free (bufp);
return NOTOK;
}
/* sbeck@cise.ufl.edu -- handle suffixes */
ci = &ct->c_ctinfo;
- snprintf (buffer, sizeof(buffer), "%s-suffix-%s/%s",
- invo_name, ci->ci_type, ci->ci_subtype);
- cp = context_find (buffer);
- if (cp == NULL || *cp == '\0') {
- snprintf (buffer, sizeof(buffer), "%s-suffix-%s", invo_name,
- ci->ci_type);
- cp = context_find (buffer);
- }
- if (cp != NULL && *cp != '\0') {
+ if ((cp = context_find_by_type ("suffix", ci->ci_type, ci->ci_subtype))) {
if (ce->ce_unlink) {
/* Create temporary file with filename extension. */
if ((ce->ce_file = m_mktemps(invo_name, cp, NULL, NULL)) == NULL) {
fprintf (ce->ce_fp, "%s: %s/%s", TYPE_FIELD, ci->ci_type, ci->ci_subtype);
len += strlen (TYPE_FIELD) + 2 + strlen (ci->ci_type)
+ 1 + strlen (ci->ci_subtype);
- buffer = output_params(len, ci->ci_first_pm, &len);
+ buffer = output_params(len, ci->ci_first_pm, &len, 0);
if (buffer) {
fputs (buffer, ce->ce_fp);
cc = len;
len -= cc;
- fwrite (buffer, sizeof(*buffer), cc, ce->ce_fp);
+ if ((int) fwrite (buffer, sizeof(*buffer), cc, ce->ce_fp) < cc) {
+ advise ("open7Bit", "fwrite");
+ }
if (ferror (ce->ce_fp)) {
content_error (ce->ce_file, ct, "error writing to");
goto clean_up;
}
}
+ *fd = fileno (ce->ce_fp);
return OK;
ready_already:
while ((cc = fread (buffer, sizeof(*buffer), sizeof(buffer), gp))
> 0)
- fwrite (buffer, sizeof(*buffer), cc, fp);
+ if ((int) fwrite (buffer, sizeof(*buffer), cc, fp) < cc) {
+ advise ("openFile", "fwrite");
+ }
fflush (fp);
if (ferror (gp)) {
return NOTOK;
}
- if (xpid) {
- if (xpid < 0)
- xpid = -xpid;
- pidcheck (pidwait (xpid, NOTOK));
- xpid = 0;
- }
-
/* Get the buffer ready to go */
bp = buffer;
buflen = sizeof(buffer);
/*
* Now, check the answer
*/
- if (!getanswer (buffer))
+ if (!read_yes_or_no_if_tty (buffer))
return NOTOK;
if (e->eb_flags) {
while ((cc= fread (buffer, sizeof(*buffer), sizeof(buffer), gp))
> 0)
- fwrite (buffer, sizeof(*buffer), cc, fp);
+ if ((int) fwrite (buffer, sizeof(*buffer), cc, fp) < cc) {
+ advise ("openFTP", "fwrite");
+ }
fflush (fp);
if (ferror (gp)) {
return NOTOK;
}
- if (xpid) {
- if (xpid < 0)
- xpid = -xpid;
- pidcheck (pidwait (xpid, NOTOK));
- xpid = 0;
- }
-
/* Get buffer ready to go */
bp = buffer;
buflen = sizeof(buffer);
e->eb_subject ? e->eb_subject : e->eb_body);
/* Now, check answer */
- if (!getanswer (buffer))
+ if (!read_yes_or_no_if_tty (buffer))
return NOTOK;
vecp = 0;
return NOTOK;
}
- if (xpid) {
- if (xpid < 0)
- xpid = -xpid;
- pidcheck (pidwait (xpid, NOTOK));
- xpid = 0;
- }
-
ce->ce_unlink = (*file == NULL);
caching = 0;
cachefile[0] = '\0';
while ((cc = fread(buffer, sizeof(*buffer),
sizeof(buffer), gp)) > 0)
- fwrite(buffer, sizeof(*buffer), cc, fp);
+ if ((int) fwrite(buffer, sizeof(*buffer), cc, fp) < cc) {
+ advise ("openURL", "fwrite");
+ }
fflush(fp);
after the last subpart that hasn't been stored anywhere else, so do
that. */
int
-get_leftover_mp_content (CT ct, int before /* or after */) {
+get_leftover_mp_content (CT ct, int before /* or after */)
+{
struct multipart *m = (struct multipart *) ct->c_ctparams;
char *boundary;
int found_boundary = 0;
- char buffer[BUFSIZ];
int max = BUFSIZ;
+ char *bufp = NULL;
+ size_t buflen;
+ ssize_t gotlen;
int read = 0;
char *content = NULL;
}
/* Back up by 1 to pick up the newline. */
- while (fgets (buffer, sizeof(buffer) - 1, ct->c_fp)) {
- read += strlen (buffer);
+ while ((gotlen = getline(&bufp, &buflen, ct->c_fp)) != -1) {
+ read += gotlen;
/* Don't look beyond beginning of first subpart (before) or
next part (after). */
- if (read > max) buffer[read-max] = '\0';
+ if (read > max) bufp[read-max] = '\0';
if (before) {
- if (! strcmp (buffer, boundary)) {
+ if (! strcmp (bufp, boundary)) {
found_boundary = 1;
}
} else {
- if (! found_boundary && ! strcmp (buffer, boundary)) {
+ if (! found_boundary && ! strcmp (bufp, boundary)) {
found_boundary = 1;
continue;
}
if ((before && ! found_boundary) || (! before && found_boundary)) {
if (content) {
char *old_content = content;
- content = concat (content, buffer, NULL);
+ content = concat (content, bufp, NULL);
free (old_content);
} else {
content = before
- ? concat ("\n", buffer, NULL)
- : concat (buffer, NULL);
+ ? concat ("\n", bufp, NULL)
+ : concat (bufp, NULL);
}
}
}
free (boundary);
+ free (bufp);
return OK;
}
return "digest";
case MULTI_PARALLEL:
return "parallel";
+ case MULTI_RELATED:
+ return "related";
default:
return "unknown_multipart_subtype";
}
}
+int
+ct_str_type (const char *type) {
+ struct str2init *s2i;
+
+ for (s2i = str2cts; s2i->si_key; ++s2i) {
+ if (! strcasecmp (type, s2i->si_key)) {
+ break;
+ }
+ }
+ if (! s2i->si_key && ! uprf (type, "X-")) {
+ ++s2i;
+ }
+
+ return s2i->si_val;
+}
+
+
+int
+ct_str_subtype (int type, const char *subtype) {
+ struct k2v *kv;
+
+ switch (type) {
+ case CT_APPLICATION:
+ for (kv = SubApplication; kv->kv_key; ++kv) {
+ if (! strcasecmp (subtype, kv->kv_key)) {
+ break;
+ }
+ }
+ return kv->kv_value;
+ case CT_MESSAGE:
+ for (kv = SubMessage; kv->kv_key; ++kv) {
+ if (! strcasecmp (subtype, kv->kv_key)) {
+ break;
+ }
+ }
+ return kv->kv_value;
+ case CT_MULTIPART:
+ for (kv = SubMultiPart; kv->kv_key; ++kv) {
+ if (! strcasecmp (subtype, kv->kv_key)) {
+ break;
+ }
+ }
+ return kv->kv_value;
+ case CT_TEXT:
+ for (kv = SubText; kv->kv_key; ++kv) {
+ if (! strcasecmp (subtype, kv->kv_key)) {
+ break;
+ }
+ }
+ return kv->kv_value;
+ default:
+ return 0;
+ }
+}
+
+
/* Find the content type and InitFunc for the CT. */
const struct str2init *
get_ct_init (int type) {
return NULL;
}
-int
+/*
+ * Parse a series of MIME attributes (or parameters) given a header as
+ * input.
+ *
+ * Arguments include:
+ *
+ * filename - Name of input file (for error messages)
+ * fieldname - Name of field being processed
+ * headerp - Pointer to pointer of the beginning of the MIME attributes.
+ * Updated to point to end of attributes when finished.
+ * param_head - Pointer to head of parameter list
+ * param_tail - Pointer to tail of parameter list
+ * commentp - Pointer to header comment pointer (may be NULL)
+ *
+ * Returns OK if parsing was successful, NOTOK if parsing failed, and
+ * DONE to indicate a benign error (minor parsing error, but the program
+ * should continue).
+ */
+
+static int
parse_header_attrs (const char *filename, const char *fieldname,
char **header_attrp, PM *param_head, PM *param_tail,
char **commentp)
{
char *cp = *header_attrp;
PM pm;
+ struct sectlist {
+ char *value;
+ int index;
+ int len;
+ struct sectlist *next;
+ } *sp, *sp2;
+ struct parmlist {
+ char *name;
+ char *charset;
+ char *lang;
+ struct sectlist *sechead;
+ struct parmlist *next;
+ } *pp, *pp2, *phead = NULL;
while (*cp == ';') {
- char *dp, *vp, *up, c;
+ char *dp, *vp, *up, *nameptr, *valptr, *charset = NULL, *lang = NULL;
+ int encoded = 0, partial = 0, len = 0, index = 0;
cp++;
while (isspace ((unsigned char) *cp))
}
if (*cp == 0) {
- advise (NULL,
- "extraneous trailing ';' in message %s's %s: "
- "parameter list",
- filename, fieldname);
+ if (! suppress_extraneous_trailing_semicolon_warning) {
+ advise (NULL,
+ "extraneous trailing ';' in message %s's %s: "
+ "parameter list",
+ filename, fieldname);
+ }
+ extraneous_trailing_semicolon = 1;
return DONE;
}
return NOTOK;
}
- pm = mh_xmalloc(sizeof(*pm));
- memset(pm, 0, sizeof(*pm));
+ /*
+ * To handle RFC 2231, we have to deal with the following extensions:
+ *
+ * name*=encoded-value
+ * name*<N>=part-N-of-a-parameter-value
+ * name*<N>*=encoded-part-N-of-a-parameter-value
+ *
+ * So the rule is:
+ * If there's a * right before the equal sign, it's encoded.
+ * If there's a * and one or more digits, then it's section N.
+ *
+ * Remember we can have one or the other, or both. cp points to
+ * beginning of name, up points past the last character in the
+ * parameter name.
+ */
+
+ for (vp = cp; vp < up; vp++) {
+ if (*vp == '*' && vp < up - 1) {
+ partial = 1;
+ continue;
+ } else if (*vp == '*' && vp == up - 1) {
+ encoded = 1;
+ } else if (partial) {
+ if (isdigit((unsigned char) *vp))
+ index = *vp - '0' + index * 10;
+ else {
+ advise (NULL, "invalid parameter index in message %s's "
+ "%s: field\n%*s(parameter %s)", filename,
+ fieldname, strlen(invo_name) + 2, "", cp);
+ return NOTOK;
+ }
+ } else {
+ len++;
+ }
+ }
+
+ /*
+ * Break out the parameter name and value sections and allocate
+ * memory for each.
+ */
+
+ nameptr = mh_xmalloc(len + 1);
+ strncpy(nameptr, cp, len);
+ nameptr[len] = '\0';
- /* This is all mega-bozo and needs cleanup */
- vp = (pm->pm_name = add (cp, NULL)) + (up - cp);
- *vp = '\0';
for (dp++; isspace ((unsigned char) *dp);)
dp++;
- /* Now store the attribute value. */
+ if (encoded) {
+ /*
+ * Single quotes delimit the character set and language tag.
+ * They are required on the first section (or a complete
+ * parameter).
+ */
+ if (index == 0) {
+ vp = dp;
+ while (*vp != '\'' && !isspace((unsigned char) *vp) &&
+ *vp != '\0')
+ vp++;
+ if (*vp == '\'') {
+ if (vp != dp) {
+ len = vp - dp;
+ charset = mh_xmalloc(len + 1);
+ strncpy(charset, dp, len);
+ charset[len] = '\0';
+ } else {
+ charset = NULL;
+ }
+ vp++;
+ } else {
+ advise(NULL, "missing charset in message %s's %s: "
+ "field\n%*s(parameter %s)", filename, fieldname,
+ strlen(invo_name) + 2, "", nameptr);
+ free(nameptr);
+ return NOTOK;
+ }
+ dp = vp;
+
+ while (*vp != '\'' && !isspace((unsigned char) *vp) &&
+ *vp != '\0')
+ vp++;
+
+ if (*vp == '\'') {
+ if (vp != dp) {
+ len = vp - dp;
+ lang = mh_xmalloc(len + 1);
+ strncpy(lang, dp, len);
+ lang[len] = '\0';
+ } else {
+ lang = NULL;
+ }
+ vp++;
+ } else {
+ advise(NULL, "missing language tag in message %s's %s: "
+ "field\n%*s(parameter %s)", filename, fieldname,
+ strlen(invo_name) + 2, "", nameptr);
+ free(nameptr);
+ if (charset)
+ free(charset);
+ return NOTOK;
+ }
+
+ dp = vp;
+ }
+
+ /*
+ * At this point vp should be pointing at the beginning
+ * of the encoded value/section. Continue until we reach
+ * the end or get whitespace. But first, calculate the
+ * length so we can allocate the correct buffer size.
+ */
+
+ for (vp = dp, len = 0; istoken(*vp); vp++) {
+ if (*vp == '%') {
+ if (*(vp + 1) == '\0' ||
+ !isxdigit((unsigned char) *(vp + 1)) ||
+ *(vp + 2) == '\0' ||
+ !isxdigit((unsigned char) *(vp + 2))) {
+ advise(NULL, "invalid encoded sequence in message "
+ "%s's %s: field\n%*s(parameter %s)",
+ filename, fieldname, strlen(invo_name) + 2,
+ "", nameptr);
+ free(nameptr);
+ if (charset)
+ free(charset);
+ if (lang)
+ free(lang);
+ return NOTOK;
+ }
+ vp += 2;
+ }
+ len++;
+ }
+
+ up = valptr = mh_xmalloc(len + 1);
+
+ for (vp = dp; istoken(*vp); vp++) {
+ if (*vp == '%') {
+ *up++ = decode_qp(*(vp + 1), *(vp + 2));
+ vp += 2;
+ } else {
+ *up++ = *vp;
+ }
+ }
+
+ *up = '\0';
+ cp = vp;
+ } else {
+ /*
+ * A "normal" string. If it's got a leading quote, then we
+ * strip the quotes out. Otherwise go until we reach the end
+ * or get whitespace. Note we scan it twice; once to get the
+ * length, then the second time copies it into the destination
+ * buffer.
+ */
- vp = pm->pm_name + (dp - cp);
+ len = 0;
- if (*dp == '"') {
- for (cp = ++dp, dp = vp;;) {
- switch (c = *cp++) {
+ if (*dp == '"') {
+ for (cp = dp + 1;;) {
+ switch (*cp++) {
case '\0':
bad_quote:
advise (NULL,
"invalid quoted-string in message %s's %s: "
"field\n%*s(parameter %s)",
filename, fieldname, strlen(invo_name) + 2, "",
- pm->pm_name);
+ nameptr);
+ free(nameptr);
+ if (charset)
+ free(charset);
+ if (lang)
+ free(lang);
return NOTOK;
+ case '"':
+ break;
case '\\':
- *dp++ = c;
- if ((c = *cp++) == '\0')
+ if (*++cp == '\0')
goto bad_quote;
- /* else fall... */
-
+ /* FALL THROUGH */
default:
- *dp++ = c;
+ len++;
continue;
+ }
+ break;
+ }
- case '"':
- *dp = '\0';
+ } else {
+ for (cp = dp; istoken (*cp); cp++) {
+ len++;
+ }
+ }
+
+ valptr = mh_xmalloc(len + 1);
+
+ if (*dp == '"') {
+ int i;
+ for (cp = dp + 1, vp = valptr, i = 0; i < len; i++) {
+ if (*cp == '\\') {
+ cp++;
+ }
+ *vp++ = *cp++;
+ }
+ cp++;
+ } else {
+ strncpy(valptr, cp = dp, len);
+ cp += len;
+ }
+
+ valptr[len] = '\0';
+ }
+
+ /*
+ * If 'partial' is set, we don't allocate a parameter now. We
+ * put it on the parameter linked list to be reassembled later.
+ *
+ * "phead" points to a list of all parameters we need to reassemble.
+ * Each parameter has a list of sections. We insert the sections in
+ * order.
+ */
+
+ if (partial) {
+ for (pp = phead; pp != NULL; pp = pp->next) {
+ if (strcasecmp(nameptr, pp->name) == 0)
+ break;
+ }
+
+ if (pp == NULL) {
+ pp = mh_xmalloc(sizeof(*pp));
+ memset(pp, 0, sizeof(*pp));
+ pp->name = nameptr;
+ pp->next = phead;
+ phead = pp;
+ }
+
+ /*
+ * Insert this into the section linked list
+ */
+
+ sp = mh_xmalloc(sizeof(*sp));
+ memset(sp, 0, sizeof(*sp));
+ sp->value = valptr;
+ sp->index = index;
+ sp->len = len;
+
+ if (pp->sechead == NULL || pp->sechead->index > index) {
+ sp->next = pp->sechead;
+ pp->sechead = sp;
+ } else {
+ for (sp2 = pp->sechead; sp2 != NULL; sp2 = sp2->next) {
+ if (sp2->index == sp->index) {
+ advise (NULL, "duplicate index (%d) in message "
+ "%s's %s: field\n%*s(parameter %s)", sp->index,
+ filename, fieldname, strlen(invo_name) + 2, "",
+ nameptr);
+ free (nameptr);
+ return NOTOK;
+ }
+ if (sp2->index < sp->index &&
+ (sp2->next == NULL || sp2->next->index > sp->index)) {
+ sp->next = sp2->next;
+ sp2->next = sp;
break;
+ }
+ }
+
+ if (sp2 == NULL) {
+ advise(NULL, "Internal error: cannot insert partial "
+ "param in message %s's %s: field\n%*s(parameter %s)",
+ filename, fieldname, strlen(invo_name) + 2, "",
+ nameptr);
+ free (nameptr);
+ return NOTOK;
}
- break;
+ }
+
+ /*
+ * Save our charset and lang tags.
+ */
+
+ if (index == 0 && encoded) {
+ if (pp->charset)
+ free(pp->charset);
+ pp->charset = charset;
+ if (pp->lang)
+ free(pp->lang);
+ pp->lang = lang;
}
} else {
- for (cp = dp, dp = vp; istoken (*cp); cp++, dp++)
- continue;
- *dp = '\0';
- }
- pm->pm_value = getcpy(vp);
- if (!*vp) {
- advise (NULL,
- "invalid parameter in message %s's %s: "
- "field\n%*s(parameter %s)",
- filename, fieldname, strlen(invo_name) + 2, "",
- pm->pm_name);
- return NOTOK;
+ pm = add_param(param_head, param_tail, nameptr, valptr, 1);
+ pm->pm_charset = charset;
+ pm->pm_lang = lang;
}
while (isspace ((unsigned char) *cp))
get_comment (filename, fieldname, &cp, commentp) == NOTOK) {
return NOTOK;
}
+ }
- if (*param_head == NULL) {
- *param_head = pm;
- *param_tail = pm;
- } else {
- (*param_tail)->pm_next = pm;
- *param_tail = pm;
+ /*
+ * Now that we're done, reassemble all of the partial parameters.
+ */
+
+ for (pp = phead; pp != NULL; ) {
+ char *p, *q;
+ size_t tlen = 0;
+ int pindex = 0;
+ for (sp = pp->sechead; sp != NULL; sp = sp->next) {
+ if (sp->index != pindex++) {
+ advise(NULL, "missing section %d for parameter in "
+ "message %s's %s: field\n%*s(parameter %s)", pindex - 1,
+ filename, fieldname, strlen(invo_name) + 2, "",
+ pp->name);
+ return NOTOK;
+ }
+ tlen += sp->len;
+ }
+
+ p = q = mh_xmalloc(tlen + 1);
+ for (sp = pp->sechead; sp != NULL; ) {
+ memcpy(q, sp->value, sp->len);
+ q += sp->len;
+ free(sp->value);
+ sp2 = sp->next;
+ free(sp);
+ sp = sp2;
}
+
+ p[tlen] = '\0';
+
+ pm = add_param(param_head, param_tail, pp->name, p, 1);
+ pm->pm_charset = pp->charset;
+ pm->pm_lang = pp->lang;
+ pp2 = pp->next;
+ free(pp);
+ pp = pp2;
}
*header_attrp = cp;
return OK;
}
+/*
+ * Return the charset for a particular content type.
+ */
+
+char *
+content_charset (CT ct) {
+ char *ret_charset = NULL;
+
+ ret_charset = get_param(ct->c_ctinfo.ci_first_pm, "charset", '?', 0);
+
+ return ret_charset ? ret_charset : getcpy ("US-ASCII");
+}
+
+
/*
* Create a string based on a list of output parameters. Assume that this
* parameter string will be appended to an existing header, so start out
*/
char *
-output_params(size_t initialwidth, PM params, int *offsetout)
+output_params(size_t initialwidth, PM params, int *offsetout, int external)
{
char *paramout = NULL;
char line[CPERLIN * 2], *q;
- int curlen, index, eightbit, encode, i;
- size_t valoff;
+ int curlen, index, cont, encode, i;
+ size_t valoff, numchars;
while (params != NULL) {
encode = 0;
valoff = 0;
q = line;
+ if (external && strcasecmp(params->pm_name, "body") == 0)
+ continue;
+
if (strlen(params->pm_name) > CPERLIN) {
advise(NULL, "Parameter name \"%s\" is too long", params->pm_name);
if (paramout)
return NULL;
}
- curlen = param_len(params, index, valoff, &eightbit);
+ curlen = param_len(params, index, valoff, &encode, &cont, &numchars);
/*
* Loop until we get a parameter that fits within a line. We
* on that.
*/
- while (curlen + 8 > CPERLIN - 1) {
- int curvallen = strlen(params->pm_value + valoff) -
- (curlen + 8 - (CPERLIN - 1));
-
+ while (cont) {
*q++ = ';';
*q++ = '\n';
*q++ = '\t';
- /*
- * curvallen holds how many characters we take from this
- * current value. Make sure it's at least 1.
- */
-
- if (curvallen < 1)
- curvallen = 1;
-
/*
* At this point we're definitely continuing the line, so
* be sure to include the parameter name and section index.
q += snprintf(q, sizeof(line) - (q - line), "%s*%d",
params->pm_name, index);
- /*
- * If eightbit was set and we're on index 0, we need to include
- * the character set and encode the first section. Otherwise
- * only encode if the section we're on contains an 8bit character.
- */
-
- if (eightbit && index == 0)
- encode = 1;
- else if (eightbit && contains8bit(params->pm_value + valoff,
- params->pm_value + valoff + curvallen))
- encode = 1;
-
/*
* Both of these functions do a NUL termination
*/
if (encode)
i = encode_param(params, q, sizeof(line) - (q - line),
- curvallen, valoff, index);
+ numchars, valoff, index);
else
i = normal_param(params, q, sizeof(line) - (q - line),
- curvallen, valoff);
+ numchars, valoff);
if (i == 0) {
if (paramout)
return NULL;
}
- valoff += curvallen;
+ valoff += numchars;
index++;
- curlen = param_len(params, index, valoff, &eightbit);
+ curlen = param_len(params, index, valoff, &encode, &cont,
+ &numchars);
q = line;
/*
q += strlen(q);
}
- if (eightbit)
+ if (encode)
i = encode_param(params, q, sizeof(line) - (q - line),
strlen(params->pm_value + valoff), valoff, index);
else
}
/*
- * Calculate the size of a parameter. Include any necessary encoding.
- * Start the length computation from where "offset" is marked.
+ * Calculate the size of a parameter.
+ *
+ * Arguments include
+ *
+ * pm - The parameter being output
+ * index - If continuing the parameter, the index of the section
+ * we're on.
+ * valueoff - The current offset into the parameter value that we're
+ * working on (previous sections have consumed valueoff bytes).
+ * encode - Set if we should perform encoding on this parameter section
+ * (given that we're consuming bytesfit bytes).
+ * cont - Set if the remaining data in value will not fit on a single
+ * line and will need to be continued.
+ * bytesfit - The number of bytes that we can consume from the parameter
+ * value and still fit on a completely new line. The
+ * calculation assumes the new line starts with a tab,
+ * includes the parameter name and any encoding, and fits
+ * within CPERLIN bytes. Will always be at least 1.
*/
static size_t
-param_len(PM pm, int index, size_t valueoff, int *eightbit)
+param_len(PM pm, int index, size_t valueoff, int *encode, int *cont,
+ size_t *bytesfit)
{
- char *start = pm->pm_value + valueoff, *p;
- size_t len = 0;
+ char *start = pm->pm_value + valueoff, *p, indexchar[32];
+ size_t len = 0, fit = 0;
+ int fitlimit = 0, eightbit, maxfit;
+
+ *encode = 0;
/*
- * Add up the length. First, start with the parameter name, and include
- * the equal sign.
+ * Add up the length. First, start with the parameter name.
*/
- len += strlen(pm->pm_name) + 1;
+ len = strlen(pm->pm_name);
/*
- * Scan the parameter value. If we find an 8-bit character, then
- * we need to compute the locale name for the length.
+ * Scan the parameter value and see if we need to do encoding for this
+ * section.
*/
- *eightbit = contains8bit(start, NULL);
+ eightbit = contains8bit(start, NULL);
/*
- * If we've got 8-bit character, put the locale on the front (if we're
- * doing part 0. Also compute the length of the string based on the
- * encoding we need to do.
+ * Determine if we need to encode this section. Encoding is necessary if:
+ *
+ * - There are any 8-bit characters at all and we're on the first
+ * section.
+ * - There are 8-bit characters within N bytes of our section start.
+ * N is calculated based on the number of bytes it would take to
+ * reach CPERLIN. Specifically:
+ * 8 (starting tab) +
+ * strlen(param name) +
+ * 4 ('* for section marker, '=', opening/closing '"')
+ * strlen (index)
+ * is the number of bytes used by everything that isn't part of the
+ * value. So that gets subtracted from CPERLIN.
*/
- if (*eightbit) {
+ snprintf(indexchar, sizeof(indexchar), "%d", index);
+ maxfit = CPERLIN - (12 + len + strlen(indexchar));
+ if ((eightbit && index == 0) || contains8bit(start, start + maxfit)) {
+ *encode = 1;
+ }
+
+ len++; /* Add in equal sign */
+
+ if (*encode) {
+ /*
+ * We're using maxfit as a marker for how many characters we can
+ * fit into the line. Bump it by two because we're not using quotes
+ * when encoding.
+ */
+
+ maxfit += 2;
+
/*
* If we don't have a charset or language tag in this parameter,
* add them now.
*/
- if (! pm->pm_charset)
+ if (! pm->pm_charset) {
pm->pm_charset = getcpy(write_charset_8bit());
+ if (strcasecmp(pm->pm_charset, "US-ASCII") == 0)
+ adios(NULL, "8-bit characters in parameter \"%s\", but "
+ "local character set is US-ASCII", pm->pm_name);
+ }
if (! pm->pm_lang)
pm->pm_lang = getcpy(NULL); /* Default to a blank lang tag */
- len++; /* For the encoding we need to do */
+ len++; /* For the encoding marker */
+ maxfit--;
if (index == 0) {
- len += strlen(pm->pm_charset) + strlen(pm->pm_lang) + 2;
+ int enclen = strlen(pm->pm_charset) + strlen(pm->pm_lang) + 2;
+ len += enclen;
+ maxfit-= enclen;
} else {
/*
- * We know we definitely need to include an index.
- * This will get the length wrong if we have more than 99
- * sections. I can live with that.
+ * We know we definitely need to include an index. maxfit already
+ * includes the section marker.
*/
- len += 2; /* *<N> */
- if (index > 9)
- len++;
+ len += strlen(indexchar);
}
for (p = start; *p != '\0'; p++) {
- if (isparamencode(*p))
+ if (isparamencode(*p)) {
len += 3;
- else
+ maxfit -= 3;
+ } else {
len++;
+ maxfit--;
+ }
+ /*
+ * Just so there's no confusion: maxfit is counting OUTPUT
+ * characters (post-encoding). fit is counting INPUT characters.
+ */
+ if (! fitlimit && maxfit >= 0)
+ fit++;
+ else if (! fitlimit)
+ fitlimit++;
}
} else {
/*
case '"':
case '\\':
len++;
+ maxfit--;
/* FALL THROUGH */
default:
len++;
+ maxfit--;
}
+ if (! fitlimit && maxfit >= 0)
+ fit++;
+ else if (! fitlimit)
+ fitlimit++;
}
len += 2;
}
+ if (fit < 1)
+ fit = 1;
+
+ *cont = fitlimit;
+ *bytesfit = fit;
+
return len;
}
*/
PM
-add_param(PM *first, PM *last, const char *name, const char *value)
+add_param(PM *first, PM *last, char *name, char *value, int nocopy)
{
PM pm = mh_xmalloc(sizeof(*pm));
memset(pm, 0, sizeof(*pm));
- pm->pm_name = getcpy(name);
- pm->pm_value = getcpy(value);
+ pm->pm_name = nocopy ? name : getcpy(name);
+ pm->pm_value = nocopy ? value : getcpy(value);
if (*first) {
(*last)->pm_next = pm;
return pm;
}
+
+/*
+ * Either replace a current parameter with a new value, or add the parameter
+ * to the parameter linked list.
+ */
+
+PM
+replace_param(PM *first, PM *last, char *name, char *value, int nocopy)
+{
+ PM pm;
+
+ for (pm = *first; pm != NULL; pm = pm->pm_next) {
+ if (strcasecmp(name, pm->pm_name) == 0) {
+ /*
+ * If nocopy is set, it's assumed that we own both name
+ * and value. We don't need name, so we discard it now.
+ */
+ if (nocopy)
+ free(name);
+ free(pm->pm_value);
+ pm->pm_value = nocopy ? value : getcpy(value);
+ return pm;
+ }
+ }
+
+ return add_param(first, last, name, value, nocopy);
+}
+
+/*
+ * Retrieve a parameter value from a parameter linked list. If the parameter
+ * value needs converted to the local character set, do that now.
+ */
+
+char *
+get_param(PM first, const char *name, char replace, int fetchonly)
+{
+ while (first != NULL) {
+ if (strcasecmp(name, first->pm_name) == 0) {
+ if (fetchonly)
+ return first->pm_value;
+ else
+ return getcpy(get_param_value(first, replace));
+ }
+ first = first->pm_next;
+ }
+
+ return NULL;
+}
+
+/*
+ * Return a parameter value, converting to the local character set if
+ * necessary
+ */
+
+char *get_param_value(PM pm, char replace)
+{
+ static char buffer[4096]; /* I hope no parameters are larger */
+ size_t bufsize = sizeof(buffer);
+#ifdef HAVE_ICONV
+ size_t inbytes;
+ int utf8;
+ iconv_t cd;
+ ICONV_CONST char *p;
+#else /* HAVE_ICONV */
+ char *p;
+#endif /* HAVE_ICONV */
+
+ char *q;
+
+ /*
+ * If we don't have a character set indicated, it's assumed to be
+ * US-ASCII. If it matches our character set, we don't need to convert
+ * anything.
+ */
+
+ if (!pm->pm_charset || check_charset(pm->pm_charset,
+ strlen(pm->pm_charset))) {
+ return pm->pm_value;
+ }
+
+ /*
+ * In this case, we need to convert. If we have iconv support, use
+ * that. Otherwise, go through and simply replace every non-ASCII
+ * character with the substitution character.
+ */
+
+#ifdef HAVE_ICONV
+ q = buffer;
+ bufsize = sizeof(buffer);
+ utf8 = strcasecmp(pm->pm_charset, "UTF-8") == 0;
+
+ cd = iconv_open(get_charset(), pm->pm_charset);
+ if (cd == (iconv_t) -1) {
+ goto noiconv;
+ }
+
+ inbytes = strlen(pm->pm_value);
+ p = pm->pm_value;
+
+ while (inbytes) {
+ if (iconv(cd, &p, &inbytes, &q, &bufsize) == (size_t)-1) {
+ if (errno != EILSEQ) {
+ iconv_close(cd);
+ goto noiconv;
+ }
+ /*
+ * Reset shift state, substitute our character,
+ * try to restart conversion.
+ */
+
+ iconv(cd, NULL, NULL, &q, &bufsize);
+
+ if (bufsize == 0) {
+ iconv_close(cd);
+ goto noiconv;
+ }
+ *q++ = replace;
+ bufsize--;
+ if (bufsize == 0) {
+ iconv_close(cd);
+ goto noiconv;
+ }
+ if (utf8) {
+ for (++p, --inbytes;
+ inbytes > 0 && (((unsigned char) *p) & 0xc0) == 0x80;
+ ++p, --inbytes)
+ continue;
+ } else {
+ p++;
+ inbytes--;
+ }
+ }
+ }
+
+ iconv_close(cd);
+
+ if (bufsize == 0)
+ q--;
+ *q = '\0';
+
+ return buffer;
+
+noiconv:
+#endif /* HAVE_ICONV */
+
+ /*
+ * Take everything non-ASCII and substituite the replacement character
+ */
+
+ q = buffer;
+ bufsize = sizeof(buffer);
+ for (p = pm->pm_value; *p != '\0' && bufsize > 1; p++, q++, bufsize--) {
+ if (isascii((unsigned char) *p) && !iscntrl((unsigned char) *p))
+ *q = *p;
+ else
+ *q = replace;
+ }
+
+ *q = '\0';
+
+ return buffer;
+}
projects / nmh / blobdiff