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-rw-r--r--libmailutils/wicket/file.c266
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diff --git a/libmailutils/wicket/file.c b/libmailutils/wicket/file.c
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+++ b/libmailutils/wicket/file.c
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+/* GNU Mailutils -- a suite of utilities for electronic mail
+ Copyright (C) 1999-2019 Free Software Foundation, Inc.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 3 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General
+ Public License along with this library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* A "file wicket" implementation */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <mailutils/errno.h>
+#include <mailutils/error.h>
+#include <mailutils/auth.h>
+#include <mailutils/url.h>
+#include <mailutils/stream.h>
+#include <mailutils/cstr.h>
+#include <mailutils/nls.h>
+
+struct file_wicket
+{
+ char *filename;
+};
+
+static void
+_file_wicket_destroy (mu_wicket_t wicket)
+{
+ struct file_wicket *fw = mu_wicket_get_data (wicket);
+ free (fw->filename);
+ free (fw);
+}
+
+struct file_ticket
+{
+ char *filename;
+ char *user;
+ mu_url_t tickurl;
+};
+
+static void
+file_ticket_destroy (mu_ticket_t ticket)
+{
+ struct file_ticket *ft = mu_ticket_get_data (ticket);
+ if (ft)
+ {
+ free (ft->filename);
+ free (ft->user);
+ mu_url_destroy (&ft->tickurl);
+ free (ft);
+ }
+}
+
+int
+file_ticket_get_cred (mu_ticket_t ticket, mu_url_t url, const char *challenge,
+ char **pplain, mu_secret_t *psec)
+{
+ struct file_ticket *ft = mu_ticket_get_data (ticket);
+ int rc = 0;
+
+ if (!ft->tickurl)
+ {
+ rc = mu_wicket_file_match_url (ft->filename, url,
+ MU_URL_PARSE_ALL,
+ &ft->tickurl);
+ if (rc)
+ return rc;
+ }
+ if (pplain)
+ {
+ if (ft->user)
+ {
+ *pplain = strdup (ft->user);
+ if (!*pplain)
+ rc = ENOMEM;
+ }
+ else
+ rc = mu_url_aget_user (ft->tickurl, pplain);
+ }
+ else
+ rc = mu_url_get_secret (ft->tickurl, psec);
+ return rc;
+}
+
+static int
+_file_wicket_get_ticket (mu_wicket_t wicket, void *data,
+ const char *user, mu_ticket_t *pticket)
+{
+ int rc;
+ mu_ticket_t ticket;
+ struct file_wicket *fw = data;
+ struct file_ticket *ft = calloc (1, sizeof (*ft));
+ ft->filename = strdup (fw->filename);
+ if (!ft->filename)
+ {
+ free (ft);
+ return ENOMEM;
+ }
+ if (user)
+ {
+ ft->user = strdup (user);
+ if (!ft->user)
+ {
+ free (ft->filename);
+ free (ft);
+ return ENOMEM;
+ }
+ }
+ else
+ ft->user = NULL;
+
+ rc = mu_ticket_create (&ticket, NULL);
+ if (rc)
+ {
+ free (ft->filename);
+ free (ft->user);
+ free (ft);
+ return rc;
+ }
+
+ mu_ticket_set_destroy (ticket, file_ticket_destroy, NULL);
+ mu_ticket_set_data (ticket, ft, NULL);
+ mu_ticket_set_get_cred (ticket, file_ticket_get_cred, NULL);
+
+ *pticket = ticket;
+ return 0;
+}
+
+int
+mu_wicket_stream_match_url (mu_stream_t stream, struct mu_locus_point *loc,
+ mu_url_t url, int parse_flags,
+ mu_url_t *pticket_url)
+{
+ int rc;
+ mu_url_t u = NULL;
+ char *buf = NULL;
+ size_t bufsize = 0;
+ size_t len;
+ mu_url_t pret = NULL;
+ int weight = 0;
+ int line = loc->mu_line;
+
+ while ((rc = mu_stream_getline (stream, &buf, &bufsize, &len)) == 0
+ && len > 0)
+ {
+ char *p;
+ int err;
+ int n;
+
+ loc->mu_line++;
+ p = mu_str_stripws (buf);
+
+ /* Skip empty lines and comments. */
+ if (*p == 0 || *p == '#')
+ continue;
+
+ if ((err = mu_url_create_hint (&u, p, parse_flags, NULL)) != 0)
+ {
+ /* Skip erroneous entry */
+ mu_error (_("%s:%u: cannot create URL: %s"),
+ loc->mu_file, loc->mu_line, mu_strerror (err));
+ continue;
+ }
+
+ if (!mu_url_has_flag (u, MU_URL_USER|MU_URL_SECRET))
+ {
+ mu_error (_("%s:%u: URL is missing required parts"),
+ loc->mu_file, loc->mu_line);
+ mu_url_destroy (&u);
+ continue;
+ }
+
+ if (!mu_url_matches_ticket (u, url, &n))
+ {
+ mu_url_destroy (&u);
+ continue;
+ }
+
+ if (!pret || n < weight)
+ {
+ pret = u;
+ weight = n;
+ line = loc->mu_line;
+ if (weight == 0)
+ break;
+ }
+ }
+ free (buf);
+
+ if (rc == 0)
+ {
+ if (pret)
+ {
+ *pticket_url = pret;
+ loc->mu_line = line;
+ }
+ else
+ rc = MU_ERR_NOENT;
+ }
+
+ return rc;
+}
+
+int
+mu_wicket_file_match_url (const char *name, mu_url_t url,
+ int parse_flags,
+ mu_url_t *pticket_url)
+{
+ mu_stream_t stream;
+ int rc;
+ struct mu_locus_point loc;
+
+ rc = mu_file_stream_create (&stream, name, MU_STREAM_READ);
+ if (rc)
+ return rc;
+ loc.mu_file = (char*) name;
+ loc.mu_line = 0;
+ loc.mu_col = 0;
+ rc = mu_wicket_stream_match_url (stream, &loc, url, parse_flags,
+ pticket_url);
+ mu_stream_close (stream);
+ mu_stream_destroy (&stream);
+ return rc;
+}
+
+int
+mu_file_wicket_create (mu_wicket_t *pwicket, const char *filename)
+{
+ mu_wicket_t wicket;
+ int rc;
+ struct file_wicket *fw = calloc (1, sizeof (*fw));
+
+ if (!fw)
+ return ENOMEM;
+ fw->filename = strdup (filename);
+ if (!fw->filename)
+ {
+ free (fw);
+ return ENOMEM;
+ }
+
+ rc = mu_wicket_create (&wicket);
+ if (rc)
+ {
+ free (fw->filename);
+ free (fw);
+ return rc;
+ }
+ mu_wicket_set_data (wicket, fw);
+ mu_wicket_set_destroy (wicket, _file_wicket_destroy);
+ mu_wicket_set_get_ticket (wicket, _file_wicket_get_ticket);
+ *pwicket = wicket;
+ return 0;
+}

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