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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
commitb5896ba9f6047e7031e2bdee0622d543e11a6734 (patch)
treefd7b460593a2fee1be579bec5697e6d887ea3421 /src/global/fold_addr.c
parentInitial commit. (diff)
downloadpostfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.tar.xz
postfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.zip
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/global/fold_addr.c')
-rw-r--r--src/global/fold_addr.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/src/global/fold_addr.c b/src/global/fold_addr.c
new file mode 100644
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--- /dev/null
+++ b/src/global/fold_addr.c
@@ -0,0 +1,172 @@
+/*++
+/* NAME
+/* fold_addr 3
+/* SUMMARY
+/* address case folding
+/* SYNOPSIS
+/* #include <fold_addr.h>
+/*
+/* char *fold_addr(result, addr, flags)
+/* VSTRING *result;
+/* const char *addr;
+/* int flags;
+/* DESCRIPTION
+/* fold_addr() case folds an address according to the options
+/* specified with \fIflags\fR. The result value is the output
+/* address.
+/*
+/* Arguments
+/* .IP result
+/* Result buffer with the output address. Note: casefolding
+/* may change the string length.
+/* .IP addr
+/* Null-terminated read-only string with the input address.
+/* .IP flags
+/* Zero or the bit-wise OR of:
+/* .RS
+/* .IP FOLD_ADDR_USER
+/* Case fold the address local part.
+/* .IP FOLD_ADDR_HOST
+/* Case fold the address domain part.
+/* .IP FOLD_ADDR_ALL
+/* Alias for (FOLD_ADDR_USER | FOLD_ADDR_HOST).
+/* .RE
+/* SEE ALSO
+/* msg(3) diagnostics interface
+/* casefold(3) casefold text
+/* DIAGNOSTICS
+/* Fatal errors: memory allocation problem.
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <stringops.h>
+
+/* Global library. */
+
+#include <fold_addr.h>
+
+#define STR(x) vstring_str(x)
+
+/* fold_addr - case fold mail address */
+
+char *fold_addr(VSTRING *result, const char *addr, int flags)
+{
+ char *cp;
+
+ /*
+ * Fold the address as appropriate.
+ */
+ switch (flags & FOLD_ADDR_ALL) {
+ case FOLD_ADDR_HOST:
+ if ((cp = strrchr(addr, '@')) != 0) {
+ cp += 1;
+ vstring_strncpy(result, addr, cp - addr);
+ casefold_append(result, cp);
+ break;
+ }
+ /* FALLTHROUGH */
+ case 0:
+ vstring_strcpy(result, addr);
+ break;
+ case FOLD_ADDR_USER:
+ if ((cp = strrchr(addr, '@')) != 0) {
+ casefold_len(result, addr, cp - addr);
+ vstring_strcat(result, cp);
+ break;
+ }
+ /* FALLTHROUGH */
+ case FOLD_ADDR_USER | FOLD_ADDR_HOST:
+ casefold(result, addr);
+ break;
+ }
+ return (STR(result));
+}
+
+#ifdef TEST
+#include <stdlib.h>
+#include <vstream.h>
+#include <vstring_vstream.h>
+#include <msg_vstream.h>
+#include <argv.h>
+
+int main(int argc, char **argv)
+{
+ VSTRING *line_buffer = vstring_alloc(1);
+ VSTRING *fold_buffer = vstring_alloc(1);
+ ARGV *cmd;
+ char **args;
+
+ msg_vstream_init(argv[0], VSTREAM_ERR);
+ util_utf8_enable = 1;
+ while (vstring_fgets_nonl(line_buffer, VSTREAM_IN)) {
+ vstream_printf("> %s\n", STR(line_buffer));
+ cmd = argv_split(STR(line_buffer), CHARS_SPACE);
+ if (cmd->argc == 0 || cmd->argv[0][0] == '#') {
+ argv_free(cmd);
+ continue;
+ }
+ args = cmd->argv;
+
+ /*
+ * Fold the host.
+ */
+ if (strcmp(args[0], "host") == 0 && cmd->argc == 2) {
+ vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer,
+ args[1], FOLD_ADDR_HOST));
+ }
+
+ /*
+ * Fold the user.
+ */
+ else if (strcmp(args[0], "user") == 0 && cmd->argc == 2) {
+ vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer,
+ args[1], FOLD_ADDR_USER));
+ }
+
+ /*
+ * Fold user and host.
+ */
+ else if (strcmp(args[0], "all") == 0 && cmd->argc == 2) {
+ vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer,
+ args[1], FOLD_ADDR_ALL));
+ }
+
+ /*
+ * Fold none.
+ */
+ else if (strcmp(args[0], "none") == 0 && cmd->argc == 2) {
+ vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer,
+ args[1], 0));
+ }
+
+ /*
+ * Usage.
+ */
+ else {
+ vstream_printf("Usage: %s host <addr> | user <addr> | all <addr>\n",
+ argv[0]);
+ }
+ vstream_fflush(VSTREAM_OUT);
+ argv_free(cmd);
+ }
+ vstring_free(line_buffer);
+ vstring_free(fold_buffer);
+ exit(0);
+}
+
+#endif /* TEST */