+++ /dev/null
-/*
-** mhbuildsbr.c -- routines to expand/translate MIME composition files
-**
-** 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.
-*/
-
-/*
-** This code was originally part of mhn.c. I split it into
-** a separate program (mhbuild.c) and then later split it
-** again (mhbuildsbr.c). But the code still has some of
-** the mhn.c code in it. This program needs additional
-** streamlining and removal of unneeded code.
-*/
-
-#include <h/mh.h>
-#include <fcntl.h>
-#include <h/signals.h>
-#include <h/md5.h>
-#include <errno.h>
-#include <signal.h>
-#include <h/tws.h>
-#include <h/mime.h>
-#include <h/mhparse.h>
-#include <h/utils.h>
-
-#ifdef TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# ifdef TM_IN_SYS_TIME
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
-#ifdef HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-#endif
-
-
-extern int debugsw;
-extern int verbosw;
-
-extern int ebcdicsw;
-extern int listsw;
-extern int rfc934sw;
-extern int contentidsw;
-
-extern int endian; /* mhmisc.c */
-
-/* cache policies */
-extern int rcachesw; /* mhcachesbr.c */
-extern int wcachesw; /* mhcachesbr.c */
-
-/*
-** Directory to place tmp files. This must
-** be set before these routines are called.
-*/
-char *tmp;
-
-pid_t xpid = 0;
-
-static char prefix[] = "----- =_aaaaaaaaaa";
-
-
-/* mhmisc.c */
-int make_intermediates(char *);
-void content_error(char *, CT, char *, ...);
-
-/* mhcachesbr.c */
-int find_cache(CT, int, int *, char *, char *, int);
-
-/* ftpsbr.c */
-int ftp_get(char *, char *, char *, char *, char *, char *, int, int);
-
-/* mhfree.c */
-void free_content(CT);
-void free_ctinfo(CT);
-void free_encoding(CT, int);
-
-/*
-** prototypes
-*/
-CT build_mime(char *);
-
-/*
-** static prototypes
-*/
-static int init_decoded_content(CT);
-static char *fgetstr(char *, int, FILE *);
-static int user_content(FILE *, char *, char *, CT *);
-static void set_id(CT, int);
-static int compose_content(CT);
-static int scan_content(CT);
-static int build_headers(CT);
-static char *calculate_digest(CT, int);
-
-
-/*
-** Main routine for translating composition file
-** into valid MIME message. It translates the draft
-** into a content structure (actually a tree of content
-** structures). This message then can be manipulated
-** in various ways, including being output via
-** output_message().
-*/
-
-CT
-build_mime(char *infile)
-{
- int compnum, state;
- char buf[BUFSIZ], name[NAMESZ];
- char *cp, *np, *vp;
- struct multipart *m;
- struct part **pp;
- CT ct;
- FILE *in;
-
- umask(~m_gmprot());
-
- /* open the composition draft */
- if ((in = fopen(infile, "r")) == NULL)
- adios(infile, "unable to open for reading");
-
- /*
- ** Allocate space for primary (outside) content
- */
- if ((ct = (CT) calloc(1, sizeof(*ct))) == NULL)
- adios(NULL, "out of memory");
-
- /*
- ** Allocate structure for handling decoded content
- ** for this part. We don't really need this, but
- ** allocate it to remain consistent.
- */
- init_decoded_content(ct);
-
- /*
- ** Parse some of the header fields in the composition
- ** draft into the linked list of header fields for
- ** the new MIME message.
- */
- for (compnum = 1, state = FLD;;) {
- switch (state = m_getfld(state, name, buf, sizeof(buf), in)) {
- case FLD:
- case FLDPLUS:
- case FLDEOF:
- compnum++;
-
- /* abort if draft has Mime-Version header field */
- if (!mh_strcasecmp(name, VRSN_FIELD))
- adios(NULL, "draft shouldn't contain %s: field", VRSN_FIELD);
-
- /*
- ** abort if draft has Content-Transfer-Encoding
- ** header field
- */
- if (!mh_strcasecmp(name, ENCODING_FIELD))
- adios(NULL, "draft shouldn't contain %s: field", ENCODING_FIELD);
-
- /* ignore any Content-Type fields in the header */
- if (!mh_strcasecmp(name, TYPE_FIELD)) {
- while (state == FLDPLUS)
- state = m_getfld(state, name, buf,
- sizeof(buf), in);
- goto finish_field;
- }
-
- /* get copies of the buffers */
- np = getcpy(name);
- vp = getcpy(buf);
-
- /* if necessary, get rest of field */
- while (state == FLDPLUS) {
- state = m_getfld(state, name, buf,
- sizeof(buf), in);
- vp = add(buf, vp); /* add to prev value */
- }
-
- /* Now add the header data to the list */
- add_header(ct, np, vp);
-
-finish_field:
- /* if this wasn't the last hdr field, then continue */
- if (state != FLDEOF)
- continue;
- /* else fall... */
-
- case FILEEOF:
- adios(NULL, "draft has empty body -- no directives!");
- /* NOTREACHED */
-
- case BODY:
- case BODYEOF:
- fseek(in, (long) (-strlen(buf)), SEEK_CUR);
- break;
-
- case LENERR:
- case FMTERR:
- adios(NULL, "message format error in component #%d",
- compnum);
-
- default:
- adios(NULL, "getfld() returned %d", state);
- }
- break;
- }
-
- /*
- ** Now add the MIME-Version header field
- ** to the list of header fields.
- */
- np = getcpy(VRSN_FIELD);
- vp = concat(" ", VRSN_VALUE, "\n", NULL);
- add_header(ct, np, vp);
-
- /*
- ** We initally assume we will find multiple contents in the
- ** draft. So create a multipart/mixed content to hold everything.
- ** We can remove this later, if it is not needed.
- */
- if (get_ctinfo("multipart/mixed", ct, 0) == NOTOK)
- done(1);
- ct->c_type = CT_MULTIPART;
- ct->c_subtype = MULTI_MIXED;
- ct->c_file = getcpy(infile);
-
- if ((m = (struct multipart *) calloc(1, sizeof(*m))) == NULL)
- adios(NULL, "out of memory");
- ct->c_ctparams = (void *) m;
- pp = &m->mp_parts;
-
- /*
- ** read and parse the composition file
- ** and the directives it contains.
- */
- while (fgetstr(buf, sizeof(buf) - 1, in)) {
- struct part *part;
- CT p;
-
- if (user_content(in, infile, buf, &p) == DONE) {
- admonish(NULL, "ignoring spurious #end");
- continue;
- }
- if (!p)
- continue;
-
- if ((part = (struct part *) calloc(1, sizeof(*part))) == NULL)
- adios(NULL, "out of memory");
- *pp = part;
- pp = &part->mp_next;
- part->mp_part = p;
- }
-
- /*
- ** close the composition draft since
- ** it's not needed any longer.
- */
- fclose(in);
-
- /* check if any contents were found */
- if (!m->mp_parts)
- adios(NULL, "no content directives found");
-
- /*
- ** If only one content was found, then remove and
- ** free the outer multipart content.
- */
- if (!m->mp_parts->mp_next) {
- CT p;
-
- p = m->mp_parts->mp_part;
- m->mp_parts->mp_part = NULL;
-
- /* move header fields */
- p->c_first_hf = ct->c_first_hf;
- p->c_last_hf = ct->c_last_hf;
- ct->c_first_hf = NULL;
- ct->c_last_hf = NULL;
-
- free_content(ct);
- ct = p;
- } else {
- set_id(ct, 1);
- }
-
- /*
- ** Fill out, or expand directives. Parse and execute
- ** commands specified by profile composition strings.
- */
- compose_content(ct);
-
- if ((cp = strchr(prefix, 'a')) == NULL)
- adios(NULL, "internal error(4)");
-
- /*
- ** Scan the contents. Choose a transfer encoding, and
- ** check if prefix for multipart boundary clashes with
- ** any of the contents.
- */
- while (scan_content(ct) == NOTOK) {
- if (*cp < 'z') {
- (*cp)++;
- } else {
- if (*++cp == 0)
- adios(NULL, "giving up trying to find a unique delimiter string");
- else
- (*cp)++;
- }
- }
-
- /* Build the rest of the header field structures */
- build_headers(ct);
-
- return ct;
-}
-
-
-/*
-** Set up structures for placing unencoded
-** content when building parts.
-*/
-
-static int
-init_decoded_content(CT ct)
-{
- CE ce;
-
- if ((ce = (CE) calloc(1, sizeof(*ce))) == NULL)
- adios(NULL, "out of memory");
-
- ct->c_cefile = ce;
- ct->c_ceopenfnx = open7Bit; /* since unencoded */
- ct->c_ceclosefnx = close_encoding;
- ct->c_cesizefnx = NULL; /* since unencoded */
-
- return OK;
-}
-
-
-static char *
-fgetstr(char *s, int n, FILE *stream)
-{
- char *cp, *ep;
-
- for (ep = (cp = s) + n; cp < ep; ) {
- int i;
-
- if (!fgets(cp, n, stream))
- return (cp != s ? s : NULL);
- if (cp == s && *cp != '#')
- return s;
-
- cp += (i = strlen(cp)) - 1;
- if (i <= 1 || *cp-- != '\n' || *cp != '\\')
- break;
- *cp = '\0';
- n -= (i - 2);
- }
-
- return s;
-}
-
-
-/*
-** Parse the composition draft for text and directives.
-** Do initial setup of Content structure.
-*/
-
-static int
-user_content(FILE *in, char *file, char *buf, CT *ctp)
-{
- int extrnal, vrsn;
- unsigned char *cp;
- char **ap;
- char buffer[BUFSIZ];
- struct multipart *m;
- struct part **pp;
- struct stat st;
- struct str2init *s2i;
- CI ci;
- CT ct;
- CE ce;
-
- if (buf[0] == '\n' || strcmp(buf, "#\n") == 0) {
- *ctp = NULL;
- return OK;
- }
-
- /* allocate basic Content structure */
- if ((ct = (CT) calloc(1, sizeof(*ct))) == NULL)
- adios(NULL, "out of memory");
- *ctp = ct;
-
- /* allocate basic structure for handling decoded content */
- init_decoded_content(ct);
- ce = ct->c_cefile;
-
- ci = &ct->c_ctinfo;
- set_id(ct, 0);
-
- /*
- ** Handle inline text. Check if line
- ** is one of the following forms:
- **
- ** 1) doesn't begin with '#' (implicit directive)
- ** 2) begins with "##" (implicit directive)
- ** 3) begins with "#<"
- */
- if (buf[0] != '#' || buf[1] == '#' || buf[1] == '<') {
- int headers;
- int inlineD;
- long pos;
- char content[BUFSIZ];
- FILE *out;
- char *cp;
-
- cp = m_mktemp2(NULL, invo_name, NULL, &out);
- if (cp == NULL)
- adios("mhbuildsbr", "unable to create temporary file");
-
- /* use a temp file to collect the plain text lines */
- ce->ce_file = getcpy(cp);
- ce->ce_unlink = 1;
-
- if (buf[0] == '#' && buf[1] == '<') {
- strncpy(content, buf + 2, sizeof(content));
- inlineD = 1;
- goto rock_and_roll;
- } else {
- inlineD = 0;
- }
-
- /* the directive is implicit */
- strncpy(content, "text/plain", sizeof(content));
- headers = 0;
- strncpy(buffer, buf[0] != '#' ? buf : buf + 1, sizeof(buffer));
- for (;;) {
- int i;
-
- if (headers >= 0 && uprf(buffer, DESCR_FIELD) &&
- buffer[i=strlen(DESCR_FIELD)] == ':') {
- headers = 1;
-
-again_descr:
- ct->c_descr = add(buffer + i + 1, ct->c_descr);
- if (!fgetstr(buffer, sizeof(buffer) - 1, in))
- adios(NULL, "end-of-file after %s: field in plaintext", DESCR_FIELD);
- switch (buffer[0]) {
- case ' ':
- case '\t':
- i = -1;
- goto again_descr;
-
- case '#':
- adios(NULL, "#-directive after %s: field in plaintext", DESCR_FIELD);
- /* NOTREACHED */
-
- default:
- break;
- }
- }
-
- if (headers >= 0 && uprf(buffer, DISPO_FIELD)
- && buffer[i = strlen(DISPO_FIELD)] == ':') {
- headers = 1;
-
-again_dispo:
- ct->c_dispo = add(buffer + i + 1, ct->c_dispo);
- if (!fgetstr(buffer, sizeof(buffer) - 1, in))
- adios(NULL, "end-of-file after %s: field in plaintext", DISPO_FIELD);
- switch (buffer[0]) {
- case ' ':
- case '\t':
- i = -1;
- goto again_dispo;
-
- case '#':
- adios(NULL, "#-directive after %s: field in plaintext", DISPO_FIELD);
- /* NOTREACHED */
-
- default:
- break;
- }
- }
-
- if (headers != 1 || buffer[0] != '\n')
- fputs(buffer, out);
-
-rock_and_roll:
- headers = -1;
- pos = ftell(in);
- if ((cp = fgetstr(buffer, sizeof(buffer) - 1, in))
- == NULL)
- break;
- if (buffer[0] == '#') {
- char *bp;
-
- if (buffer[1] != '#')
- break;
- for (cp = (bp = buffer) + 1; *cp; cp++)
- *bp++ = *cp;
- *bp = '\0';
- }
- }
-
- if (listsw)
- ct->c_end = ftell(out);
- fclose(out);
-
- /* parse content type */
- if (get_ctinfo(content, ct, inlineD) == NOTOK)
- done(1);
-
- for (s2i = str2cts; s2i->si_key; s2i++)
- if (!mh_strcasecmp(ci->ci_type, s2i->si_key))
- break;
- if (!s2i->si_key && !uprf(ci->ci_type, "X-"))
- s2i++;
-
- /*
- ** check type specified (possibly implicitly)
- */
- switch (ct->c_type = s2i->si_val) {
- case CT_MESSAGE:
- if (!mh_strcasecmp(ci->ci_subtype, "rfc822")) {
- ct->c_encoding = CE_7BIT;
- goto call_init;
- }
- /* else fall... */
- case CT_MULTIPART:
- adios(NULL, "it doesn't make sense to define an in-line %s content",
- ct->c_type == CT_MESSAGE ? "message" :
- "multipart");
- /* NOTREACHED */
-
- default:
-call_init:
- if ((ct->c_ctinitfnx = s2i->si_init))
- (*ct->c_ctinitfnx) (ct);
- break;
- }
-
- if (cp)
- fseek(in, pos, SEEK_SET);
- return OK;
- }
-
- /*
- ** If we've reached this point, the next line
- ** must be some type of explicit directive.
- */
-
- /* check if directive is external-type */
- extrnal = (buf[1] == '@');
-
- /* parse directive */
- if (get_ctinfo(buf + (extrnal ? 2 : 1), ct, 1) == NOTOK)
- done(1);
-
- /* check directive against the list of MIME types */
- for (s2i = str2cts; s2i->si_key; s2i++)
- if (!mh_strcasecmp(ci->ci_type, s2i->si_key))
- break;
-
- /*
- ** Check if the directive specified a valid type.
- ** This will happen if it was one of the following forms:
- **
- ** #type/subtype (or)
- ** #@type/subtype
- */
- if (s2i->si_key) {
- if (!ci->ci_subtype)
- adios(NULL, "missing subtype in \"#%s\"", ci->ci_type);
-
- switch (ct->c_type = s2i->si_val) {
- case CT_MULTIPART:
- adios(NULL, "use \"#begin ... #end\" instead of \"#%s/%s\"", ci->ci_type, ci->ci_subtype);
- /* NOTREACHED */
-
- case CT_MESSAGE:
- if (!mh_strcasecmp(ci->ci_subtype, "partial"))
- adios(NULL, "sorry, \"#%s/%s\" isn't supported", ci->ci_type, ci->ci_subtype);
- if (!mh_strcasecmp(ci->ci_subtype, "external-body"))
- adios(NULL, "use \"#@type/subtype ... [] ...\" instead of \"#%s/%s\"", ci->ci_type, ci->ci_subtype);
-use_forw:
- adios(NULL, "use \"#forw [+folder] [msgs]\" instead of \"#%s/%s\"", ci->ci_type, ci->ci_subtype);
- /* NOTREACHED */
-
- default:
- if ((ct->c_ctinitfnx = s2i->si_init))
- (*ct->c_ctinitfnx) (ct);
- break;
- }
-
- /*
- ** #@type/subtype (external types directive)
- */
- if (extrnal) {
- struct exbody *e;
- CT p;
-
- if (!ci->ci_magic)
- adios(NULL, "need external information for \"#@%s/%s\"", ci->ci_type, ci->ci_subtype);
- p = ct;
-
- snprintf(buffer, sizeof(buffer), "message/external-body; %s", ci->ci_magic);
- free(ci->ci_magic);
- ci->ci_magic = NULL;
-
- /*
- ** Since we are using the current Content structure to
- ** hold information about the type of the external
- ** reference, we need to create another Content
- ** structure for the message/external-body to wrap
- ** it in.
- */
- if ((ct = (CT) calloc(1, sizeof(*ct))) == NULL)
- adios(NULL, "out of memory");
- *ctp = ct;
- ci = &ct->c_ctinfo;
- if (get_ctinfo(buffer, ct, 0) == NOTOK)
- done(1);
- ct->c_type = CT_MESSAGE;
- ct->c_subtype = MESSAGE_EXTERNAL;
-
- if ((e = (struct exbody *)
- calloc(1, sizeof(*e))) == NULL)
- adios(NULL, "out of memory");
- ct->c_ctparams = (void *) e;
-
- e->eb_parent = ct;
- e->eb_content = p;
- p->c_ctexbody = e;
-
- if (params_external(ct, 1) == NOTOK)
- done(1);
-
- return OK;
- }
-
- /* Handle [file] argument */
- if (ci->ci_magic) {
- /* check if specifies command to execute */
- if (*ci->ci_magic == '|' || *ci->ci_magic == '!') {
- for (cp = ci->ci_magic + 1; isspace(*cp); cp++)
- continue;
- if (!*cp)
- adios(NULL, "empty pipe command for #%s directive", ci->ci_type);
- cp = getcpy(cp);
- free(ci->ci_magic);
- ci->ci_magic = cp;
- } else {
- /* record filename of decoded contents */
- ce->ce_file = ci->ci_magic;
- if (access(ce->ce_file, R_OK) == NOTOK)
- adios("reading", "unable to access %s for", ce->ce_file);
- if (listsw && stat(ce->ce_file, &st) != NOTOK)
- ct->c_end = (long) st.st_size;
- ci->ci_magic = NULL;
- }
- return OK;
- }
-
- /*
- ** No [file] argument, so check profile for
- ** method to compose content.
- */
- snprintf(buffer, sizeof(buffer), "%s-compose-%s/%s",
- invo_name, ci->ci_type, ci->ci_subtype);
- if ((cp = context_find(buffer)) == NULL || *cp == '\0') {
- snprintf(buffer, sizeof(buffer), "%s-compose-%s",
- invo_name, ci->ci_type);
- if ((cp = context_find(buffer)) == NULL ||
- *cp == '\0') {
- content_error(NULL, ct, "don't know how to compose content");
- done(1);
- }
- }
- ci->ci_magic = getcpy(cp);
- return OK;
- }
-
- if (extrnal)
- adios(NULL, "external definition not allowed for \"#%s\"",
- ci->ci_type);
-
- /*
- ** Message directive
- ** #forw [+folder] [msgs]
- */
- if (!mh_strcasecmp(ci->ci_type, "forw")) {
- int msgnum;
- char *folder, *arguments[MAXARGS];
- struct msgs *mp;
-
- if (ci->ci_magic) {
- ap = brkstring(ci->ci_magic, " ", "\n");
- copyip(ap, arguments, MAXARGS);
- } else {
- arguments[0] = seq_cur;
- arguments[1] = NULL;
- }
- folder = NULL;
-
- /* search the arguments for a folder name */
- for (ap = arguments; *ap; ap++) {
- cp = *ap;
- if (*cp == '+' || *cp == '@') {
- if (folder)
- adios(NULL, "only one folder per #forw directive");
- else
- folder = getcpy(expandfol(cp));
- }
- }
-
- /* else, use the current folder */
- if (!folder)
- folder = getcpy(getcurfol());
-
- if (!(mp = folder_read(folder)))
- adios(NULL, "unable to read folder %s", folder);
- for (ap = arguments; *ap; ap++) {
- cp = *ap;
- if (*cp != '+' && *cp != '@')
- if (!m_convert(mp, cp))
- done(1);
- }
- free(folder);
- free_ctinfo(ct);
-
- /*
- ** If there is more than one message to include, make this
- ** a content of type "multipart/digest" and insert each message
- ** as a subpart. If there is only one message, then make this
- ** a content of type "message/rfc822".
- */
- if (mp->numsel > 1) {
- /* we are forwarding multiple messages */
- if (get_ctinfo("multipart/digest", ct, 0) == NOTOK)
- done(1);
- ct->c_type = CT_MULTIPART;
- ct->c_subtype = MULTI_DIGEST;
-
- if ((m = (struct multipart *)
- calloc(1, sizeof(*m))) == NULL)
- adios(NULL, "out of memory");
- ct->c_ctparams = (void *) m;
- pp = &m->mp_parts;
-
- for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
- if (is_selected(mp, msgnum)) {
- struct part *part;
- CT p;
- CE pe;
-
- if ((p = (CT) calloc(1, sizeof(*p)))
- == NULL)
- adios(NULL, "out of memory");
- init_decoded_content(p);
- pe = p->c_cefile;
- if (get_ctinfo("message/rfc822", p, 0)
- == NOTOK)
- done(1);
- p->c_type = CT_MESSAGE;
- p->c_subtype = MESSAGE_RFC822;
-
- snprintf(buffer, sizeof(buffer),
- "%s/%d", mp->foldpath,
- msgnum);
- pe->ce_file = getcpy(buffer);
- if (listsw && stat(pe->ce_file, &st)
- != NOTOK)
- p->c_end = (long) st.st_size;
-
- if ((part = (struct part *) calloc(1, sizeof(*part))) == NULL)
- adios(NULL, "out of memory");
- *pp = part;
- pp = &part->mp_next;
- part->mp_part = p;
- }
- }
- } else {
- /* we are forwarding one message */
- if (get_ctinfo("message/rfc822", ct, 0) == NOTOK)
- done(1);
- ct->c_type = CT_MESSAGE;
- ct->c_subtype = MESSAGE_RFC822;
-
- msgnum = mp->lowsel;
- snprintf(buffer, sizeof(buffer), "%s/%d",
- mp->foldpath, msgnum);
- ce->ce_file = getcpy(buffer);
- if (listsw && stat(ce->ce_file, &st) != NOTOK)
- ct->c_end = (long) st.st_size;
- }
-
- folder_free(mp); /* free folder/message structure */
- return OK;
- }
-
- /*
- ** #end
- */
- if (!mh_strcasecmp(ci->ci_type, "end")) {
- free_content(ct);
- *ctp = NULL;
- return DONE;
- }
-
- /*
- ** #begin [ alternative | parallel ]
- */
- if (!mh_strcasecmp(ci->ci_type, "begin")) {
- if (!ci->ci_magic) {
- vrsn = MULTI_MIXED;
- cp = SubMultiPart[vrsn - 1].kv_key;
- } else if (!mh_strcasecmp(ci->ci_magic, "alternative")) {
- vrsn = MULTI_ALTERNATE;
- cp = SubMultiPart[vrsn - 1].kv_key;
- } else if (!mh_strcasecmp(ci->ci_magic, "parallel")) {
- vrsn = MULTI_PARALLEL;
- cp = SubMultiPart[vrsn - 1].kv_key;
- } else if (uprf(ci->ci_magic, "digest")) {
- goto use_forw;
- } else {
- vrsn = MULTI_UNKNOWN;
- cp = ci->ci_magic;
- }
-
- free_ctinfo(ct);
- snprintf(buffer, sizeof(buffer), "multipart/%s", cp);
- if (get_ctinfo(buffer, ct, 0) == NOTOK)
- done(1);
- ct->c_type = CT_MULTIPART;
- ct->c_subtype = vrsn;
-
- if ((m = (struct multipart *) calloc(1, sizeof(*m))) == NULL)
- adios(NULL, "out of memory");
- ct->c_ctparams = (void *) m;
-
- pp = &m->mp_parts;
- while (fgetstr(buffer, sizeof(buffer) - 1, in)) {
- struct part *part;
- CT p;
-
- if (user_content(in, file, buffer, &p) == DONE) {
- if (!m->mp_parts)
- adios(NULL, "empty \"#begin ... #end\" sequence");
- return OK;
- }
- if (!p)
- continue;
-
- if ((part = (struct part *)
- calloc(1, sizeof(*part))) == NULL)
- adios(NULL, "out of memory");
- *pp = part;
- pp = &part->mp_next;
- part->mp_part = p;
- }
- admonish(NULL, "premature end-of-file, missing #end");
- return OK;
- }
-
- /*
- ** Unknown directive
- */
- adios(NULL, "unknown directive \"#%s\"", ci->ci_type);
- return NOTOK; /* NOT REACHED */
-}
-
-
-static void
-set_id(CT ct, int top)
-{
- char msgid[BUFSIZ];
- static int partno;
- static time_t clock = 0;
- static char *msgfmt;
-
- if (clock == 0) {
- time(&clock);
- snprintf(msgid, sizeof(msgid), "<%d.%ld.%%d@%s>\n",
- (int) getpid(), (long) clock, LocalName());
- partno = 0;
- msgfmt = getcpy(msgid);
- }
- snprintf(msgid, sizeof(msgid), msgfmt, top ? 0 : ++partno);
- ct->c_id = getcpy(msgid);
-}
-
-
-static char ebcdicsafe[0x100] = {
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01,
- 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-
-
-/*
-** Fill out, or expand the various contents in the composition
-** draft. Read-in any necessary files. Parse and execute any
-** commands specified by profile composition strings.
-*/
-
-static int
-compose_content(CT ct)
-{
- CE ce = ct->c_cefile;
-
- switch (ct->c_type) {
- case CT_MULTIPART:
- {
- int partnum;
- char *pp;
- char partnam[BUFSIZ];
- struct multipart *m = (struct multipart *) ct->c_ctparams;
- struct part *part;
-
- if (ct->c_partno) {
- snprintf(partnam, sizeof(partnam), "%s.",
- ct->c_partno);
- pp = partnam + strlen(partnam);
- } else {
- pp = partnam;
- }
-
- /* first, we call compose_content on all the subparts */
- for (part = m->mp_parts, partnum = 1; part;
- part = part->mp_next, partnum++) {
- CT p = part->mp_part;
-
- sprintf(pp, "%d", partnum);
- p->c_partno = getcpy(partnam);
- if (compose_content(p) == NOTOK)
- return NOTOK;
- }
-
- /*
- ** If the -rfc934mode switch is given, then check all
- ** the subparts of a multipart/digest. If they are all
- ** message/rfc822, then mark this content and all
- ** subparts with the rfc934 compatibility mode flag.
- */
- if (rfc934sw && ct->c_subtype == MULTI_DIGEST) {
- int is934 = 1;
-
- for (part = m->mp_parts; part; part = part->mp_next) {
- CT p = part->mp_part;
-
- if (p->c_subtype != MESSAGE_RFC822) {
- is934 = 0;
- break;
- }
- }
- ct->c_rfc934 = is934;
- for (part = m->mp_parts; part; part = part->mp_next) {
- CT p = part->mp_part;
-
- if ((p->c_rfc934 = is934))
- p->c_end++;
- }
- }
-
- if (listsw) {
- ct->c_end = (partnum = strlen(prefix) + 2) + 2;
- if (ct->c_rfc934)
- ct->c_end += 1;
-
- for (part = m->mp_parts; part; part = part->mp_next)
- ct->c_end += part->mp_part->c_end + partnum;
- }
- }
- break;
-
- case CT_MESSAGE:
- /* Nothing to do for type message */
- break;
-
- /*
- ** Discrete types (text/application/audio/image/video)
- */
- default:
- if (!ce->ce_file) {
- pid_t child_id;
- int xstdout, len, buflen;
- char *bp, **ap, *cp;
- char *vec[4], buffer[BUFSIZ];
- FILE *out;
- CI ci = &ct->c_ctinfo;
- char *tfile = NULL;
-
- if (!(cp = ci->ci_magic))
- adios(NULL, "internal error(5)");
-
- tfile = m_mktemp2(NULL, invo_name, NULL, NULL);
- if (tfile == NULL) {
- adios("mhbuildsbr", "unable to create temporary file");
- }
- ce->ce_file = getcpy(tfile);
- ce->ce_unlink = 1;
-
- xstdout = 0;
-
- /* Get buffer ready to go */
- bp = buffer;
- bp[0] = '\0';
- buflen = sizeof(buffer);
-
- /*
- ** Parse composition string into buffer
- */
- for ( ; *cp; cp++) {
- if (*cp == '%') {
- switch (*++cp) {
- case 'a':
- {
- /*
- ** insert parameters from
- ** directive
- */
- char **ep;
- char *s = "";
-
- for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) {
- snprintf(bp, buflen, "%s%s=\"%s\"", s, *ap, *ep);
- len = strlen(bp);
- bp += len;
- buflen -= len;
- s = " ";
- }
- }
- break;
-
- case 'F':
- /* %f, and stdout is not-redirected */
- xstdout = 1;
- /* and fall... */
-
- case 'f':
- /*
- ** insert temporary filename
- ** where content should be
- ** written
- */
- snprintf(bp, buflen, "%s", ce->ce_file);
- break;
-
- case 's':
- /* insert content subtype */
- strncpy(bp, ci->ci_subtype, buflen);
- break;
-
- case '%':
- /* insert character % */
- goto raw;
-
- default:
- *bp++ = *--cp;
- *bp = '\0';
- buflen--;
- continue;
- }
- len = strlen(bp);
- bp += len;
- buflen -= len;
- } else {
-raw:
- *bp++ = *cp;
- *bp = '\0';
- buflen--;
- }
- }
-
- if (verbosw)
- printf("composing content %s/%s from command\n\t%s\n", ci->ci_type, ci->ci_subtype, buffer);
-
- fflush(stdout); /* not sure if need for -noverbose */
-
- vec[0] = "/bin/sh";
- vec[1] = "-c";
- vec[2] = buffer;
- vec[3] = NULL;
-
- if ((out = fopen(ce->ce_file, "w")) == NULL)
- adios(ce->ce_file, "unable to open for writing");
-
- switch (child_id = fork()) {
- case NOTOK:
- adios("fork", "unable to fork");
- /* NOTREACHED */
-
- case OK:
- if (!xstdout)
- dup2(fileno(out), 1);
- close(fileno(out));
- execvp("/bin/sh", vec);
- fprintf(stderr, "unable to exec ");
- perror("/bin/sh");
- _exit(-1);
- /* NOTREACHED */
-
- default:
- fclose(out);
- if (pidXwait(child_id, NULL))
- done(1);
- break;
- }
- }
-
- /* Check size of file */
- if (listsw && ct->c_end == 0L) {
- struct stat st;
-
- if (stat(ce->ce_file, &st) != NOTOK)
- ct->c_end = (long) st.st_size;
- }
- break;
- }
-
- return OK;
-}
-
-
-/*
-** Scan the content.
-**
-** 1) choose a transfer encoding.
-** 2) check for clashes with multipart boundary string.
-** 3) for text content, figure out which character set is being used.
-**
-** If there is a clash with one of the contents and the multipart boundary,
-** this function will exit with NOTOK. This will cause the scanning process
-** to be repeated with a different multipart boundary. It is possible
-** (although highly unlikely) that this scan will be repeated multiple times.
-*/
-
-static int
-scan_content(CT ct)
-{
- int len;
- int check8bit = 0, contains8bit = 0; /* check if contains 8bit data */
- int checklinelen = 0, linelen = 0; /* check for long lines */
- int checkboundary = 0, boundaryclash = 0; /* check if clashes with multipart boundary */
- int checklinespace = 0, linespace = 0; /* check if any line ends with space */
- int checkebcdic = 0, ebcdicunsafe = 0; /* check if contains ebcdic unsafe characters */
- unsigned char *cp = NULL, buffer[BUFSIZ];
- struct text *t = NULL;
- FILE *in = NULL;
- CE ce = ct->c_cefile;
-
- /*
- ** handle multipart by scanning all subparts
- ** and then checking their encoding.
- */
- if (ct->c_type == CT_MULTIPART) {
- struct multipart *m = (struct multipart *) ct->c_ctparams;
- struct part *part;
-
- /* initially mark the domain of enclosing multipart as 7bit */
- ct->c_encoding = CE_7BIT;
-
- for (part = m->mp_parts; part; part = part->mp_next) {
- CT p = part->mp_part;
-
- if (scan_content(p) == NOTOK) {
- /* choose encoding for subpart */
- return NOTOK;
- }
-
- /*
- ** if necessary, enlarge encoding for enclosing
- ** multipart
- */
- if (p->c_encoding == CE_BINARY)
- ct->c_encoding = CE_BINARY;
- if (p->c_encoding == CE_8BIT &&
- ct->c_encoding != CE_BINARY)
- ct->c_encoding = CE_8BIT;
- }
-
- return OK;
- }
-
- /*
- ** Decide what to check while scanning this content.
- */
- switch (ct->c_type) {
- case CT_TEXT:
- check8bit = 1;
- checkboundary = 1;
- if (ct->c_subtype == TEXT_PLAIN) {
- checkebcdic = 0;
- checklinelen = 0;
- checklinespace = 0;
- } else {
- checkebcdic = ebcdicsw;
- checklinelen = 1;
- checklinespace = 1;
- }
- break;
-
- case CT_APPLICATION:
- check8bit = 1;
- checkebcdic = ebcdicsw;
- checklinelen = 1;
- checklinespace = 1;
- checkboundary = 1;
- break;
-
- case CT_MESSAGE:
- check8bit = 0;
- checkebcdic = 0;
- checklinelen = 0;
- checklinespace = 0;
-
- /* don't check anything for message/external */
- if (ct->c_subtype == MESSAGE_EXTERNAL)
- checkboundary = 0;
- else
- checkboundary = 1;
- break;
-
- case CT_AUDIO:
- case CT_IMAGE:
- case CT_VIDEO:
- /*
- ** Don't check anything for these types,
- ** since we are forcing use of base64.
- */
- check8bit = 0;
- checkebcdic = 0;
- checklinelen = 0;
- checklinespace = 0;
- checkboundary = 0;
- break;
- }
-
- /*
- ** Scan the unencoded content
- */
- if (check8bit || checklinelen || checklinespace || checkboundary) {
- if ((in = fopen(ce->ce_file, "r")) == NULL)
- adios(ce->ce_file, "unable to open for reading");
- len = strlen(prefix);
-
- while (fgets(buffer, sizeof(buffer) - 1, in)) {
- /*
- ** Check for 8bit data.
- */
- if (check8bit) {
- for (cp = buffer; *cp; cp++) {
- if (!isascii(*cp)) {
- contains8bit = 1;
- /* no need to keep checking */
- check8bit = 0;
- }
- /*
- ** Check if character is ebcdic-safe.
- ** We only check this if also checking
- ** for 8bit data.
- */
- if (checkebcdic && !ebcdicsafe[*cp & 0xff]) {
- ebcdicunsafe = 1;
- /* no need to keep checking */
- checkebcdic = 0;
- }
- }
- }
-
- /*
- ** Check line length.
- */
- if (checklinelen && (strlen(buffer) > CPERLIN + 1)) {
- linelen = 1;
- checklinelen = 0; /* no need to keep checking */
- }
-
- /*
- ** Check if line ends with a space.
- */
- if (checklinespace &&
- (cp = buffer + strlen(buffer) - 2) >
- buffer && isspace(*cp)) {
- linespace = 1;
- /* no need to keep checking */
- checklinespace = 0;
- }
-
- /*
- ** Check if content contains a line that clashes
- ** with our standard boundary for multipart messages.
- */
- if (checkboundary && buffer[0] == '-' &&
- buffer[1] == '-') {
- for (cp = buffer + strlen(buffer) - 1;
- cp >= buffer; cp--)
- if (!isspace(*cp))
- break;
- *++cp = '\0';
- if (strncmp(buffer + 2, prefix, len)==0 &&
- isdigit(buffer[2 + len])) {
- boundaryclash = 1;
- /* no need to keep checking */
- checkboundary = 0;
- }
- }
- }
- fclose(in);
- }
-
- /*
- ** Decide which transfer encoding to use.
- */
- switch (ct->c_type) {
- case CT_TEXT:
- /*
- ** If the text content didn't specify a character
- ** set, we need to figure out which one was used.
- */
- t = (struct text *) ct->c_ctparams;
- if (t->tx_charset == CHARSET_UNSPECIFIED) {
- CI ci = &ct->c_ctinfo;
- char **ap, **ep;
-
- for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++)
- continue;
-
- if (contains8bit) {
- t->tx_charset = CHARSET_UNKNOWN;
- *ap = concat("charset=", write_charset_8bit(),
- NULL);
- } else {
- t->tx_charset = CHARSET_USASCII;
- *ap = getcpy("charset=us-ascii");
- }
-
- cp = strchr(*ap++, '=');
- *ap = NULL;
- *cp++ = '\0';
- *ep = cp;
- }
-
- if (contains8bit || ebcdicunsafe || linelen || linespace ||
- checksw)
- ct->c_encoding = CE_QUOTED;
- else
- ct->c_encoding = CE_7BIT;
- break;
-
- case CT_APPLICATION:
- /* For application type, use base64, except when postscript */
- if (contains8bit || ebcdicunsafe || linelen || linespace ||
- checksw)
- ct->c_encoding = (ct->c_subtype ==
- APPLICATION_POSTSCRIPT) ?
- CE_QUOTED : CE_BASE64;
- else
- ct->c_encoding = CE_7BIT;
- break;
-
- case CT_MESSAGE:
- ct->c_encoding = CE_7BIT;
- break;
-
- case CT_AUDIO:
- case CT_IMAGE:
- case CT_VIDEO:
- /* For audio, image, and video contents, just use base64 */
- ct->c_encoding = CE_BASE64;
- break;
- }
-
- return (boundaryclash ? NOTOK : OK);
-}
-
-
-/*
-** Scan the content structures, and build header
-** fields that will need to be output into the
-** message.
-*/
-
-static int
-build_headers(CT ct)
-{
- int cc, mailbody, len;
- char **ap, **ep;
- char *np, *vp, buffer[BUFSIZ];
- CI ci = &ct->c_ctinfo;
-
- /*
- ** If message is type multipart, then add the multipart
- ** boundary to the list of attribute/value pairs.
- */
- if (ct->c_type == CT_MULTIPART) {
- char *cp;
- static int level = 0; /* store nesting level */
-
- ap = ci->ci_attrs;
- ep = ci->ci_values;
- snprintf(buffer, sizeof(buffer), "boundary=%s%d",
- prefix, level++);
- cp = strchr(*ap++ = getcpy(buffer), '=');
- *ap = NULL;
- *cp++ = '\0';
- *ep = cp;
- }
-
- /*
- ** Skip the output of Content-Type, parameters, content
- ** description and disposition, and Content-ID if the
- ** content is of type "message" and the rfc934 compatibility
- ** flag is set (which means we are inside multipart/digest
- ** and the switch -rfc934mode was given).
- */
- if (ct->c_type == CT_MESSAGE && ct->c_rfc934)
- goto skip_headers;
-
- /*
- ** output the content type and subtype
- */
- np = getcpy(TYPE_FIELD);
- vp = concat(" ", ci->ci_type, "/", ci->ci_subtype, NULL);
-
- /* keep track of length of line */
- len = strlen(TYPE_FIELD) + strlen(ci->ci_type) +
- strlen(ci->ci_subtype) + 3;
-
- mailbody = ct->c_type == CT_MESSAGE &&
- ct->c_subtype == MESSAGE_EXTERNAL &&
- ((struct exbody *) ct->c_ctparams)->eb_body;
-
- /*
- ** Append the attribute/value pairs to
- ** the end of the Content-Type line.
- */
- for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) {
- if (mailbody && !mh_strcasecmp(*ap, "body"))
- continue;
-
- vp = add(";", vp);
- len++;
-
- snprintf(buffer, sizeof(buffer), "%s=\"%s\"", *ap, *ep);
- if (len + 1 + (cc = strlen(buffer)) >= CPERLIN) {
- vp = add("\n\t", vp);
- len = 8;
- } else {
- vp = add(" ", vp);
- len++;
- }
- vp = add(buffer, vp);
- len += cc;
- }
-
- /*
- ** Append any RFC-822 comment to the end of
- ** the Content-Type line.
- */
- if (ci->ci_comment) {
- snprintf(buffer, sizeof(buffer), "(%s)", ci->ci_comment);
- if (len + 1 + (cc = 2 + strlen(ci->ci_comment)) >= CPERLIN) {
- vp = add("\n\t", vp);
- len = 8;
- } else {
- vp = add(" ", vp);
- len++;
- }
- vp = add(buffer, vp);
- len += cc;
- }
- vp = add("\n", vp);
- add_header(ct, np, vp);
-
- /*
- ** output the Content-ID, unless disabled by -nocontentid
- */
- if (contentidsw && ct->c_id) {
- np = getcpy(ID_FIELD);
- vp = concat(" ", ct->c_id, NULL);
- add_header(ct, np, vp);
- }
-
- /*
- ** output the Content-Description
- */
- if (ct->c_descr) {
- np = getcpy(DESCR_FIELD);
- vp = concat(" ", ct->c_descr, NULL);
- add_header(ct, np, vp);
- }
-
- /*
- ** output the Content-Disposition
- */
- if (ct->c_dispo) {
- np = getcpy(DISPO_FIELD);
- vp = concat(" ", ct->c_dispo, NULL);
- add_header(ct, np, vp);
- }
-
-skip_headers:
- /*
- ** If this is the internal content structure for a
- ** "message/external", then we are done with the
- ** headers (since it has no body).
- */
- if (ct->c_ctexbody)
- return OK;
-
- /*
- ** output the Content-MD5
- */
- if (checksw) {
- np = getcpy(MD5_FIELD);
- vp = calculate_digest(ct, (ct->c_encoding == CE_QUOTED) ?
- 1 : 0);
- add_header(ct, np, vp);
- }
-
- /*
- ** output the Content-Transfer-Encoding
- */
- switch (ct->c_encoding) {
- case CE_7BIT:
- /* Nothing to output */
- break;
-
- case CE_8BIT:
- if (ct->c_type == CT_MESSAGE)
- adios(NULL, "internal error, invalid encoding");
-
- np = getcpy(ENCODING_FIELD);
- vp = concat(" ", "8bit", "\n", NULL);
- add_header(ct, np, vp);
- break;
-
- case CE_QUOTED:
- if (ct->c_type == CT_MESSAGE || ct->c_type == CT_MULTIPART)
- adios(NULL, "internal error, invalid encoding");
-
- np = getcpy(ENCODING_FIELD);
- vp = concat(" ", "quoted-printable", "\n", NULL);
- add_header(ct, np, vp);
- break;
-
- case CE_BASE64:
- if (ct->c_type == CT_MESSAGE || ct->c_type == CT_MULTIPART)
- adios(NULL, "internal error, invalid encoding");
-
- np = getcpy(ENCODING_FIELD);
- vp = concat(" ", "base64", "\n", NULL);
- add_header(ct, np, vp);
- break;
-
- case CE_BINARY:
- if (ct->c_type == CT_MESSAGE)
- adios(NULL, "internal error, invalid encoding");
-
- np = getcpy(ENCODING_FIELD);
- vp = concat(" ", "binary", "\n", NULL);
- add_header(ct, np, vp);
- break;
-
- default:
- adios(NULL, "unknown transfer encoding in content");
- break;
- }
-
- /*
- ** Additional content specific header processing
- */
- switch (ct->c_type) {
- case CT_MULTIPART:
- {
- struct multipart *m;
- struct part *part;
-
- m = (struct multipart *) ct->c_ctparams;
- for (part = m->mp_parts; part; part = part->mp_next) {
- CT p;
-
- p = part->mp_part;
- build_headers(p);
- }
- }
- break;
-
- case CT_MESSAGE:
- if (ct->c_subtype == MESSAGE_EXTERNAL) {
- struct exbody *e;
-
- e = (struct exbody *) ct->c_ctparams;
- build_headers(e->eb_content);
- }
- break;
-
- default:
- /* Nothing to do */
- break;
- }
-
- return OK;
-}
-
-
-static char nib2b64[0x40+1] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-static char *
-calculate_digest(CT ct, int asciiP)
-{
- int cc;
- char buffer[BUFSIZ], *vp, *op;
- unsigned char *dp;
- unsigned char digest[16];
- unsigned char outbuf[25];
- FILE *in;
- MD5_CTX mdContext;
- CE ce = ct->c_cefile;
-
- /* open content */
- if ((in = fopen(ce->ce_file, "r")) == NULL)
- adios(ce->ce_file, "unable to open for reading");
-
- /* Initialize md5 context */
- MD5Init(&mdContext);
-
- /* calculate md5 message digest */
- if (asciiP) {
- while (fgets(buffer, sizeof(buffer) - 1, in)) {
- char c, *cp;
-
- cp = buffer + strlen(buffer) - 1;
- if ((c = *cp) == '\n')
- *cp = '\0';
-
- MD5Update(&mdContext, (unsigned char *) buffer,
- (unsigned int) strlen(buffer));
-
- if (c == '\n')
- MD5Update(&mdContext, (unsigned char *) "\r\n",
- 2);
- }
- } else {
- while ((cc = fread(buffer, sizeof(*buffer), sizeof(buffer),
- in)) > 0)
- MD5Update(&mdContext, (unsigned char *) buffer,
- (unsigned int) cc);
- }
-
- /* md5 finalization. Write digest and zero md5 context */
- MD5Final(digest, &mdContext);
-
- /* close content */
- fclose(in);
-
- /* print debugging info */
- if (debugsw) {
- unsigned char *ep;
-
- fprintf(stderr, "MD5 digest=");
- for (ep = (dp = digest) + sizeof(digest) / sizeof(digest[0]);
- dp < ep; dp++)
- fprintf(stderr, "%02x", *dp & 0xff);
- fprintf(stderr, "\n");
- }
-
- /* encode the digest using base64 */
- for (dp = digest, op = outbuf, cc = sizeof(digest) / sizeof(digest[0]);
- cc > 0; cc -= 3, op += 4) {
- unsigned long bits;
- char *bp;
-
- bits = (*dp++ & 0xff) << 16;
- if (cc > 1) {
- bits |= (*dp++ & 0xff) << 8;
- if (cc > 2)
- bits |= *dp++ & 0xff;
- }
-
- for (bp = op + 4; bp > op; bits >>= 6)
- *--bp = nib2b64[bits & 0x3f];
- if (cc < 3) {
- *(op + 3) = '=';
- if (cc < 2)
- *(op + 2) = '=';
- }
- }
-
- /* null terminate string */
- outbuf[24] = '\0';
-
- /* now make copy and return string */
- vp = concat(" ", outbuf, "\n", NULL);
- return vp;
-}
projects / mmh / blobdiff