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-rw-r--r--src/global/strip_addr.c252
1 files changed, 252 insertions, 0 deletions
diff --git a/src/global/strip_addr.c b/src/global/strip_addr.c
new file mode 100644
index 0000000..c4c39b0
--- /dev/null
+++ b/src/global/strip_addr.c
@@ -0,0 +1,252 @@
+/*++
+/* NAME
+/* strip_addr 3
+/* SUMMARY
+/* strip extension from full or localpart-only address
+/* SYNOPSIS
+/* #include <strip_addr.h>
+/*
+/* char *strip_addr_internal(address, extension, delimiter_set)
+/* const char *address;
+/* char **extension;
+/* const char *delimiter_set;
+/* LEGACY SUPPORT
+/* char *strip_addr(address, extension, delimiter_set)
+/* const char *address;
+/* char **extension;
+/* const char *delimiter_set;
+/* DESCRIPTION
+/* strip_addr*() takes an address and either returns a null
+/* pointer when the address contains no address extension,
+/* or returns a copy of the address without address extension.
+/* The caller is expected to pass the copy to myfree().
+/*
+/* With strip_addr_internal(), the input and result are in
+/* internal form.
+/*
+/* strip_addr() is a backwards-compatible form for legacy code.
+/*
+/* Arguments:
+/* .IP address
+/* Address localpart or user@domain form.
+/* .IP extension
+/* A null pointer, or the address of a pointer that is set to
+/* the address of a dynamic memory copy of the address extension
+/* that had to be chopped off.
+/* The copy includes the recipient address delimiter.
+/* The caller is expected to pass the copy to myfree().
+/* .IP delimiter_set
+/* Set of recipient address delimiter characters.
+/* SEE ALSO
+/* split_addr(3) strip extension from localpart
+/* 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
+/*
+/* Wietse Venema
+/* Google, Inc.
+/* 111 8th Avenue
+/* New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <mymalloc.h>
+
+/* Global library. */
+
+#include <split_addr.h>
+#include <strip_addr.h>
+
+/* strip_addr - strip extension from address */
+
+char *strip_addr_internal(const char *full, char **extension,
+ const char *delimiter_set)
+{
+ char *ratsign;
+ char *extent;
+ char *saved_ext;
+ char *stripped;
+
+ /*
+ * A quick test to eliminate inputs without delimiter anywhere.
+ */
+ if (*delimiter_set == 0 || full[strcspn(full, delimiter_set)] == 0) {
+ stripped = saved_ext = 0;
+ } else {
+ stripped = mystrdup(full);
+ if ((ratsign = strrchr(stripped, '@')) != 0)
+ *ratsign = 0;
+ if ((extent = split_addr(stripped, delimiter_set)) != 0) {
+ extent -= 1;
+ if (extension) {
+ *extent = full[strlen(stripped)];
+ saved_ext = mystrdup(extent);
+ *extent = 0;
+ } else
+ saved_ext = 0;
+ if (ratsign != 0) {
+ *ratsign = '@';
+ memmove(extent, ratsign, strlen(ratsign) + 1);
+ }
+ } else {
+ myfree(stripped);
+ stripped = saved_ext = 0;
+ }
+ }
+ if (extension)
+ *extension = saved_ext;
+ return (stripped);
+}
+
+#ifdef TEST
+
+#include <msg.h>
+#include <mail_params.h>
+
+int main(int unused_argc, char **unused_argv)
+{
+ char *extension;
+ char *stripped;
+ char *delim = "+-";
+
+#define NO_DELIM ""
+
+ /*
+ * No static initializer, because this is owned by a library.
+ */
+ var_double_bounce_sender = DEF_DOUBLE_BOUNCE;
+
+ /*
+ * Incredible. This function takes only three arguments, and the tests
+ * already take more lines of code than the code being tested.
+ */
+ stripped = strip_addr_internal("foo", (char **) 0, NO_DELIM);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 1");
+
+ stripped = strip_addr_internal("foo", &extension, NO_DELIM);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 2");
+ if (extension != 0)
+ msg_panic("strip_addr botch 3");
+
+ stripped = strip_addr_internal("foo", (char **) 0, delim);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 4");
+
+ stripped = strip_addr_internal("foo", &extension, delim);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 5");
+ if (extension != 0)
+ msg_panic("strip_addr botch 6");
+
+ stripped = strip_addr_internal("foo@bar", (char **) 0, NO_DELIM);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 7");
+
+ stripped = strip_addr_internal("foo@bar", &extension, NO_DELIM);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 8");
+ if (extension != 0)
+ msg_panic("strip_addr botch 9");
+
+ stripped = strip_addr_internal("foo@bar", (char **) 0, delim);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 10");
+
+ stripped = strip_addr_internal("foo@bar", &extension, delim);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 11");
+ if (extension != 0)
+ msg_panic("strip_addr botch 12");
+
+ stripped = strip_addr_internal("foo-ext", (char **) 0, NO_DELIM);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 13");
+
+ stripped = strip_addr_internal("foo-ext", &extension, NO_DELIM);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 14");
+ if (extension != 0)
+ msg_panic("strip_addr botch 15");
+
+ stripped = strip_addr_internal("foo-ext", (char **) 0, delim);
+ if (stripped == 0)
+ msg_panic("strip_addr botch 16");
+ msg_info("wanted: foo-ext -> %s", "foo");
+ msg_info("strip_addr foo-ext -> %s", stripped);
+ myfree(stripped);
+
+ stripped = strip_addr_internal("foo-ext", &extension, delim);
+ if (stripped == 0)
+ msg_panic("strip_addr botch 17");
+ if (extension == 0)
+ msg_panic("strip_addr botch 18");
+ msg_info("wanted: foo-ext -> %s %s", "foo", "-ext");
+ msg_info("strip_addr foo-ext -> %s %s", stripped, extension);
+ myfree(stripped);
+ myfree(extension);
+
+ stripped = strip_addr_internal("foo-ext@bar", (char **) 0, NO_DELIM);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 19");
+
+ stripped = strip_addr_internal("foo-ext@bar", &extension, NO_DELIM);
+ if (stripped != 0)
+ msg_panic("strip_addr botch 20");
+ if (extension != 0)
+ msg_panic("strip_addr botch 21");
+
+ stripped = strip_addr_internal("foo-ext@bar", (char **) 0, delim);
+ if (stripped == 0)
+ msg_panic("strip_addr botch 22");
+ msg_info("wanted: foo-ext@bar -> %s", "foo@bar");
+ msg_info("strip_addr foo-ext@bar -> %s", stripped);
+ myfree(stripped);
+
+ stripped = strip_addr_internal("foo-ext@bar", &extension, delim);
+ if (stripped == 0)
+ msg_panic("strip_addr botch 23");
+ if (extension == 0)
+ msg_panic("strip_addr botch 24");
+ msg_info("wanted: foo-ext@bar -> %s %s", "foo@bar", "-ext");
+ msg_info("strip_addr foo-ext@bar -> %s %s", stripped, extension);
+ myfree(stripped);
+ myfree(extension);
+
+ stripped = strip_addr_internal("foo+ext@bar", &extension, delim);
+ if (stripped == 0)
+ msg_panic("strip_addr botch 25");
+ if (extension == 0)
+ msg_panic("strip_addr botch 26");
+ msg_info("wanted: foo+ext@bar -> %s %s", "foo@bar", "+ext");
+ msg_info("strip_addr foo+ext@bar -> %s %s", stripped, extension);
+ myfree(stripped);
+ myfree(extension);
+
+ stripped = strip_addr_internal("foo bar+ext", &extension, delim);
+ if (stripped == 0)
+ msg_panic("strip_addr botch 27");
+ if (extension == 0)
+ msg_panic("strip_addr botch 28");
+ msg_info("wanted: foo bar+ext -> %s %s", "foo bar", "+ext");
+ msg_info("strip_addr foo bar+ext -> %s %s", stripped, extension);
+ myfree(stripped);
+ myfree(extension);
+
+ return (0);
+}
+
+#endif
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