#include "defs.h"
#include <glib.h>
#include <gpgme.h>
+#include <ctype.h>
#include "utils.h"
#include "privacy.h"
#include "pgpmime.h"
#include "sgpgme.h"
#include "prefs_common.h"
+#include "prefs_gpg.h"
+#include "passphrase.h"
typedef struct _PrivacyDataPGP PrivacyDataPGP;
if (parent == NULL)
return FALSE;
if ((parent->type != MIMETYPE_MULTIPART) ||
- g_strcasecmp(parent->subtype, "signed"))
+ g_ascii_strcasecmp(parent->subtype, "signed"))
return FALSE;
protocol = procmime_mimeinfo_get_parameter(parent, "protocol");
- if ((protocol == NULL) || g_strcasecmp(protocol, "application/pgp-signature"))
+ if ((protocol == NULL) || g_ascii_strcasecmp(protocol, "application/pgp-signature"))
return FALSE;
/* check if mimeinfo is the first child */
if (signature == NULL)
return FALSE;
if ((signature->type != MIMETYPE_APPLICATION) ||
- g_strcasecmp(signature->subtype, "pgp-signature"))
+ g_ascii_strcasecmp(signature->subtype, "pgp-signature"))
return FALSE;
if (data == NULL) {
data->done_sigtest = TRUE;
data->is_signed = TRUE;
- if (prefs_common.auto_check_signatures)
- pgpmime_check_signature(mimeinfo);
-
return TRUE;
}
+static gchar *get_canonical_content(FILE *fp, const gchar *boundary)
+{
+ gchar *ret;
+ GString *textbuffer;
+ guint boundary_len;
+ gchar buf[BUFFSIZE];
+
+ boundary_len = strlen(boundary);
+ while (fgets(buf, sizeof(buf), fp) != NULL)
+ if (IS_BOUNDARY(buf, boundary, boundary_len))
+ break;
+
+ textbuffer = g_string_new("");
+ while (fgets(buf, sizeof(buf), fp) != NULL) {
+ gchar *buf2;
+
+ if (IS_BOUNDARY(buf, boundary, boundary_len))
+ break;
+
+ buf2 = canonicalize_str(buf);
+ g_string_append(textbuffer, buf2);
+ g_free(buf2);
+ }
+ g_string_truncate(textbuffer, textbuffer->len - 2);
+
+ ret = textbuffer->str;
+ g_string_free(textbuffer, FALSE);
+
+ return ret;
+}
+
static gint pgpmime_check_signature(MimeInfo *mimeinfo)
{
PrivacyDataPGP *data;
MimeInfo *parent, *signature;
FILE *fp;
- gchar buf[BUFFSIZE];
gchar *boundary;
- GString *textstr;
- gint boundary_len;
+ gchar *textstr;
GpgmeData sigdata, textdata;
g_return_val_if_fail(mimeinfo != NULL, -1);
debug_print("Checking PGP/MIME signature\n");
parent = procmime_mimeinfo_parent(mimeinfo);
- fp = fopen(parent->filename, "rb");
+ fp = fopen(parent->data.filename, "rb");
g_return_val_if_fail(fp != NULL, SIGNATURE_INVALID);
- boundary = g_hash_table_lookup(parent->parameters, "boundary");
+ boundary = g_hash_table_lookup(parent->typeparameters, "boundary");
if (!boundary)
return 0;
- boundary_len = strlen(boundary);
- while (fgets(buf, sizeof(buf), fp) != NULL)
- if (IS_BOUNDARY(buf, boundary, boundary_len))
- break;
-
- textstr = g_string_new("");
- while (fgets(buf, sizeof(buf), fp) != NULL) {
- gchar *buf2;
+ textstr = get_canonical_content(fp, boundary);
- if (IS_BOUNDARY(buf, boundary, boundary_len))
- break;
-
- buf2 = canonicalize_str(buf);
- g_string_append(textstr, buf2);
- g_free(buf2);
- }
- g_string_truncate(textstr, textstr->len - 2);
-
- gpgme_data_new_from_mem(&textdata, textstr->str, textstr->len, 0);
+ gpgme_data_new_from_mem(&textdata, textstr, strlen(textstr), 0);
signature = (MimeInfo *) mimeinfo->node->next->data;
sigdata = sgpgme_data_from_mimeinfo(signature);
gpgme_data_release(sigdata);
gpgme_data_release(textdata);
- g_string_free(textstr, TRUE);
+ g_free(textstr);
fclose(fp);
return 0;
g_return_val_if_fail(data != NULL, SIGNATURE_INVALID);
+ if (data->sigstatus == GPGME_SIG_STAT_NONE &&
+ prefs_gpg_get_config()->auto_check_signatures)
+ pgpmime_check_signature(mimeinfo);
+
return sgpgme_sigstat_gpgme_to_privacy(data->ctx, data->sigstatus);
}
g_return_val_if_fail(data != NULL, g_strdup("Error"));
+ if (data->sigstatus == GPGME_SIG_STAT_NONE &&
+ prefs_gpg_get_config()->auto_check_signatures)
+ pgpmime_check_signature(mimeinfo);
+
return sgpgme_sigstat_info_short(data->ctx, data->sigstatus);
}
g_return_val_if_fail(data != NULL, g_strdup("Error"));
+ if (data->sigstatus == GPGME_SIG_STAT_NONE &&
+ prefs_gpg_get_config()->auto_check_signatures)
+ pgpmime_check_signature(mimeinfo);
+
return sgpgme_sigstat_info_full(data->ctx, data->sigstatus);
}
if (mimeinfo->type != MIMETYPE_MULTIPART)
return FALSE;
- if (g_strcasecmp(mimeinfo->subtype, "encrypted"))
+ if (g_ascii_strcasecmp(mimeinfo->subtype, "encrypted"))
return FALSE;
tmpstr = procmime_mimeinfo_get_parameter(mimeinfo, "protocol");
- if ((tmpstr == NULL) || g_strcasecmp(tmpstr, "application/pgp-encrypted"))
+ if ((tmpstr == NULL) || g_ascii_strcasecmp(tmpstr, "application/pgp-encrypted"))
return FALSE;
if (g_node_n_children(mimeinfo->node) != 2)
return FALSE;
tmpinfo = (MimeInfo *) g_node_nth_child(mimeinfo->node, 0)->data;
if (tmpinfo->type != MIMETYPE_APPLICATION)
return FALSE;
- if (g_strcasecmp(tmpinfo->subtype, "pgp-encrypted"))
+ if (g_ascii_strcasecmp(tmpinfo->subtype, "pgp-encrypted"))
return FALSE;
tmpinfo = (MimeInfo *) g_node_nth_child(mimeinfo->node, 1)->data;
if (tmpinfo->type != MIMETYPE_APPLICATION)
return FALSE;
- if (g_strcasecmp(tmpinfo->subtype, "octet-stream"))
+ if (g_ascii_strcasecmp(tmpinfo->subtype, "octet-stream"))
return FALSE;
return TRUE;
g_node_unlink(decinfo->node);
procmime_mimeinfo_free_all(parseinfo);
- decinfo->tmpfile = TRUE;
+ decinfo->tmp = TRUE;
if (sigstat != GPGME_SIG_STAT_NONE) {
if (decinfo->privacy != NULL) {
if (data->ctx)
gpgme_release(data->ctx);
data->ctx = ctx;
- }
+ } else
+ gpgme_release(ctx);
-
return decinfo;
}
+/*
+ * Find TAG in XML and return a pointer into xml set just behind the
+ * closing angle. Return NULL if not found.
+ */
+static const char *
+find_xml_tag (const char *xml, const char *tag)
+{
+ int taglen = strlen (tag);
+ const char *s = xml;
+
+ while ( (s = strchr (s, '<')) ) {
+ s++;
+ if (!strncmp (s, tag, taglen)) {
+ const char *s2 = s + taglen;
+ if (*s2 == '>' || isspace (*(const unsigned char*)s2) ) {
+ /* found */
+ while (*s2 && *s2 != '>') /* skip attributes */
+ s2++;
+ /* fixme: do need to handle angles inside attribute vallues? */
+ return *s2? (s2+1):NULL;
+ }
+ }
+ while (*s && *s != '>') /* skip to end of tag */
+ s++;
+ }
+ return NULL;
+}
+
+
+/*
+ * Extract the micalg from an GnupgOperationInfo XML container.
+ */
+static char *
+extract_micalg (char *xml)
+{
+ const char *s;
+
+ s = find_xml_tag (xml, "GnupgOperationInfo");
+ if (s) {
+ const char *s_end = find_xml_tag (s, "/GnupgOperationInfo");
+ s = find_xml_tag (s, "signature");
+ if (s && s_end && s < s_end) {
+ const char *s_end2 = find_xml_tag (s, "/signature");
+ if (s_end2 && s_end2 < s_end) {
+ s = find_xml_tag (s, "micalg");
+ if (s && s < s_end2) {
+ s_end = strchr (s, '<');
+ if (s_end) {
+ char *p = g_malloc (s_end - s + 1);
+ memcpy (p, s, s_end - s);
+ p[s_end-s] = 0;
+ return p;
+ }
+ }
+ }
+ }
+ }
+ return NULL;
+}
+
+gboolean pgpmime_sign(MimeInfo *mimeinfo)
+{
+ MimeInfo *msgcontent, *sigmultipart, *newinfo;
+ gchar *textstr, *opinfo, *micalg;
+ FILE *fp;
+ gchar *boundary, *sigcontent;
+ GpgmeCtx ctx;
+ GpgmeData gpgtext, gpgsig;
+ guint len;
+ struct passphrase_cb_info_s info;
+
+ memset (&info, 0, sizeof info);
+
+ /* remove content node from message */
+ msgcontent = (MimeInfo *) mimeinfo->node->children->data;
+ g_node_unlink(msgcontent->node);
+
+ /* create temporary multipart for content */
+ sigmultipart = procmime_mimeinfo_new();
+ sigmultipart->type = MIMETYPE_MULTIPART;
+ sigmultipart->subtype = g_strdup("signed");
+ boundary = generate_mime_boundary("Signature");
+ g_hash_table_insert(sigmultipart->typeparameters, g_strdup("boundary"),
+ g_strdup(boundary));
+ g_hash_table_insert(sigmultipart->typeparameters, g_strdup("protocol"),
+ g_strdup("application/pgp-signature"));
+ g_node_append(sigmultipart->node, msgcontent->node);
+ g_node_append(mimeinfo->node, sigmultipart->node);
+
+ /* write message content to temporary file */
+ fp = my_tmpfile();
+ procmime_write_mimeinfo(sigmultipart, fp);
+ rewind(fp);
+
+ /* read temporary file into memory */
+ textstr = get_canonical_content(fp, boundary);
+
+ fclose(fp);
+
+ gpgme_data_new_from_mem(&gpgtext, textstr, strlen(textstr), 0);
+ gpgme_data_new(&gpgsig);
+ gpgme_new(&ctx);
+ gpgme_set_textmode(ctx, 1);
+ gpgme_set_armor(ctx, 1);
+ gpgme_signers_clear(ctx);
+
+ if (!getenv("GPG_AGENT_INFO")) {
+ info.c = ctx;
+ gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
+ }
+
+ if (gpgme_op_sign(ctx, gpgtext, gpgsig, GPGME_SIG_MODE_DETACH) != GPGME_No_Error)
+ return FALSE;
+ opinfo = gpgme_get_op_info(ctx, 0);
+ micalg = extract_micalg(opinfo);
+ g_free(opinfo);
+
+ gpgme_release(ctx);
+ sigcontent = gpgme_data_release_and_get_mem(gpgsig, &len);
+ gpgme_data_release(gpgtext);
+ g_free(textstr);
+
+ /* add signature */
+ g_hash_table_insert(sigmultipart->typeparameters, g_strdup("micalg"),
+ micalg);
+
+ newinfo = procmime_mimeinfo_new();
+ newinfo->type = MIMETYPE_APPLICATION;
+ newinfo->subtype = g_strdup("pgp-signature");
+ newinfo->content = MIMECONTENT_MEM;
+ newinfo->data.mem = g_malloc(len + 1);
+ g_memmove(newinfo->data.mem, sigcontent, len);
+ newinfo->data.mem[len] = '\0';
+ g_node_append(sigmultipart->node, newinfo->node);
+
+ g_free(sigcontent);
+
+ return TRUE;
+}
+
+gchar *pgpmime_get_encrypt_data(GSList *recp_names)
+{
+ return sgpgme_get_encrypt_data(recp_names);
+}
+
+gboolean pgpmime_encrypt(MimeInfo *mimeinfo, const gchar *encrypt_data)
+{
+ MimeInfo *msgcontent, *encmultipart, *newinfo;
+ FILE *fp;
+ gchar *boundary, *enccontent;
+ guint len;
+ gchar *textstr;
+ GpgmeData gpgtext, gpgenc;
+ gchar **recipients, **nextrecp;
+ GpgmeRecipients recp;
+ GpgmeCtx ctx;
+
+ /* build GpgmeRecipients from encrypt_data */
+ recipients = g_strsplit(encrypt_data, " ", 0);
+ gpgme_recipients_new(&recp);
+ for (nextrecp = recipients; *nextrecp != NULL; nextrecp++) {
+ printf("%s\n", *nextrecp);
+ gpgme_recipients_add_name_with_validity(recp, *nextrecp,
+ GPGME_VALIDITY_FULL);
+ }
+ g_strfreev(recipients);
+
+ debug_print("Encrypting message content\n");
+
+ /* remove content node from message */
+ msgcontent = (MimeInfo *) mimeinfo->node->children->data;
+ g_node_unlink(msgcontent->node);
+
+ /* create temporary multipart for content */
+ encmultipart = procmime_mimeinfo_new();
+ encmultipart->type = MIMETYPE_MULTIPART;
+ encmultipart->subtype = g_strdup("encrypted");
+ boundary = generate_mime_boundary("Encrypt");
+ g_hash_table_insert(encmultipart->typeparameters, g_strdup("boundary"),
+ g_strdup(boundary));
+ g_hash_table_insert(encmultipart->typeparameters, g_strdup("protocol"),
+ g_strdup("application/pgp-encrypted"));
+ g_node_append(encmultipart->node, msgcontent->node);
+
+ /* write message content to temporary file */
+ fp = my_tmpfile();
+ procmime_write_mimeinfo(encmultipart, fp);
+ rewind(fp);
+
+ /* read temporary file into memory */
+ textstr = get_canonical_content(fp, boundary);
+
+ fclose(fp);
+
+ /* encrypt data */
+ gpgme_data_new_from_mem(&gpgtext, textstr, strlen(textstr), 0);
+ gpgme_data_new(&gpgenc);
+ gpgme_new(&ctx);
+ gpgme_set_armor(ctx, 1);
+
+ gpgme_op_encrypt(ctx, recp, gpgtext, gpgenc);
+
+ gpgme_release(ctx);
+ enccontent = gpgme_data_release_and_get_mem(gpgenc, &len);
+ gpgme_recipients_release(recp);
+ gpgme_data_release(gpgtext);
+ g_free(textstr);
+
+ /* create encrypted multipart */
+ g_node_unlink(msgcontent->node);
+ procmime_mimeinfo_free_all(msgcontent);
+ g_node_append(mimeinfo->node, encmultipart->node);
+
+ newinfo = procmime_mimeinfo_new();
+ newinfo->type = MIMETYPE_APPLICATION;
+ newinfo->subtype = g_strdup("pgp-encrypted");
+ newinfo->content = MIMECONTENT_MEM;
+ newinfo->data.mem = g_strdup("Version: 1\n");
+ g_node_append(encmultipart->node, newinfo->node);
+
+ newinfo = procmime_mimeinfo_new();
+ newinfo->type = MIMETYPE_APPLICATION;
+ newinfo->subtype = g_strdup("octet-stream");
+ newinfo->content = MIMECONTENT_MEM;
+ newinfo->data.mem = g_malloc(len);
+ g_memmove(newinfo->data.mem, enccontent, len);
+ newinfo->data.mem[len] = '\0';
+ g_node_append(encmultipart->node, newinfo->node);
+
+ g_free(enccontent);
+
+ return TRUE;
+}
+
static PrivacySystem pgpmime_system = {
"pgpmime", /* id */
- "PGP/Mime", /* name */
+ "PGP Mime", /* name */
pgpmime_free_privacydata, /* free_privacydata */
pgpmime_is_encrypted, /* is_encrypted(MimeInfo *) */
pgpmime_decrypt, /* decrypt(MimeInfo *) */
+
+ TRUE,
+ pgpmime_sign,
+
+ TRUE,
+ pgpmime_get_encrypt_data,
+ pgpmime_encrypt,
};
void pgpmime_init()
projects / claws.git / blobdiff