--- a/ssmtp.c
+++ b/ssmtp.c
@@ -55,21 +55,21 @@ bool_t use_oldauth = False; /* use old
#define ARPADATE_LENGTH 32 /* Current date in RFC format */
char arpadate[ARPADATE_LENGTH];
-char *auth_user = (char)NULL;
-char *auth_pass = (char)NULL;
-char *auth_method = (char)NULL; /* Mechanism for SMTP authentication */
-char *mail_domain = (char)NULL;
-char *from = (char)NULL; /* Use this as the From: address */
+char *auth_user = NULL;
+char *auth_pass = NULL;
+char *auth_method = NULL; /* Mechanism for SMTP authentication */
+char *mail_domain = NULL;
+char *from = NULL; /* Use this as the From: address */
char *hostname;
char *mailhost = "mailhub";
-char *minus_f = (char)NULL;
-char *minus_F = (char)NULL;
+char *minus_f = NULL;
+char *minus_F = NULL;
char *gecos;
-char *prog = (char)NULL;
+char *prog = NULL;
char *root = NULL;
char *tls_cert = "/etc/ssl/certs/ssmtp.pem"; /* Default Certificate */
-char *uad = (char)NULL;
-char *config_file = (char)NULL; /* alternate configuration file */
+char *uad = NULL;
+char *config_file = NULL; /* alternate configuration file */
headers_t headers, *ht;
@@ -261,7 +261,7 @@ char *strip_post_ws(char *str)
p = (str + strlen(str));
while(isspace(*--p)) {
- *p = (char)NULL;
+ *p = '\0';
}
return(p);
@@ -279,7 +279,7 @@ char *addr_parse(char *str)
#endif
/* Simple case with email address enclosed in <> */
- if((p = strdup(str)) == (char *)NULL) {
+ if((p = strdup(str)) == NULL) {
die("addr_parse(): strdup()");
}
@@ -287,7 +287,7 @@ char *addr_parse(char *str)
q++;
if((p = strchr(q, '>'))) {
- *p = (char)NULL;
+ *p = '\0';
}
#if 0
@@ -310,7 +310,7 @@ char *addr_parse(char *str)
q = strip_post_ws(p);
if(*q == ')') {
while((*--q != '('));
- *q = (char)NULL;
+ *q = '\0';
}
(void)strip_post_ws(p);
@@ -349,7 +349,6 @@ standardise() -- Trim off '\n's and doub
*/
bool_t standardise(char *str, bool_t *linestart)
{
- size_t sl;
char *p;
bool_t leadingdot = False;
@@ -363,7 +362,7 @@ bool_t standardise(char *str, bool_t *li
*linestart = False;
if((p = strchr(str, '\n'))) {
- *p = (char)NULL;
+ *p = '\0';
*linestart = True;
}
return(leadingdot);
@@ -384,7 +383,7 @@ void revaliases(struct passwd *pw)
while(fgets(buf, sizeof(buf), fp)) {
/* Make comments invisible */
if((p = strchr(buf, '#'))) {
- *p = (char)NULL;
+ *p = '\0';
}
/* Ignore malformed lines and comments */
@@ -519,11 +518,11 @@ void rcpt_save(char *str)
#endif
/* Ignore missing usernames */
- if(*str == (char)NULL) {
+ if(*str == '\0') {
return;
}
- if((rt->string = strdup(str)) == (char *)NULL) {
+ if((rt->string = strdup(str)) == NULL) {
die("rcpt_save() -- strdup() failed");
}
@@ -548,7 +547,7 @@ void rcpt_parse(char *str)
(void)fprintf(stderr, "*** rcpt_parse(): str = [%s]\n", str);
#endif
- if((p = strdup(str)) == (char *)NULL) {
+ if((p = strdup(str)) == NULL) {
die("rcpt_parse(): strdup() failed");
}
q = p;
@@ -576,7 +575,7 @@ void rcpt_parse(char *str)
}
/* End of string? */
- if(*(q + 1) == (char)NULL) {
+ if(*(q + 1) == '\0') {
got_addr = True;
}
@@ -584,7 +583,7 @@ void rcpt_parse(char *str)
if((*q == ',') && (in_quotes == False)) {
got_addr = True;
- *q = (char)NULL;
+ *q = '\0';
}
if(got_addr) {
@@ -668,7 +667,7 @@ void header_save(char *str)
(void)fprintf(stderr, "header_save(): str = [%s]\n", str);
#endif
- if((p = strdup(str)) == (char *)NULL) {
+ if((p = strdup(str)) == NULL) {
die("header_save() -- strdup() failed");
}
ht->string = p;
@@ -676,7 +675,7 @@ void header_save(char *str)
if(strncasecmp(ht->string, "From:", 5) == 0) {
#if 1
/* Hack check for NULL From: line */
- if(*(p + 6) == (char)NULL) {
+ if(*(p + 6) == '\0') {
return;
}
#endif
@@ -739,19 +738,19 @@ header_parse() -- Break headers into sep
void header_parse(FILE *stream)
{
size_t size = BUF_SZ, len = 0;
- char *p = (char *)NULL, *q;
+ char *p = NULL, *q;
bool_t in_header = True;
- char l = (char)NULL;
+ char l = '\0';
int c;
while(in_header && ((c = fgetc(stream)) != EOF)) {
/* Must have space for up to two more characters, since we
may need to insert a '\r' */
- if((p == (char *)NULL) || (len >= (size - 1))) {
+ if((p == NULL) || (len >= (size - 1))) {
size += BUF_SZ;
p = (char *)realloc(p, (size * sizeof(char)));
- if(p == (char *)NULL) {
+ if(p == NULL) {
die("header_parse() -- realloc() failed");
}
q = (p + len);
@@ -776,9 +775,9 @@ void header_parse(FILE *stream)
in_header = False;
default:
- *q = (char)NULL;
+ *q = '\0';
if((q = strrchr(p, '\n'))) {
- *q = (char)NULL;
+ *q = '\0';
}
header_save(p);
@@ -809,9 +808,9 @@ void header_parse(FILE *stream)
in_header = False;
default:
- *q = (char)NULL;
+ *q = '\0';
if((q = strrchr(p, '\n'))) {
- *q = (char)NULL;
+ *q = '\0';
}
header_save(p);
@@ -876,11 +875,11 @@ bool_t read_config()
char *rightside;
/* Make comments invisible */
if((p = strchr(buf, '#'))) {
- *p = (char)NULL;
+ *p = '\0';
}
/* Ignore malformed lines and comments */
- if(strchr(buf, '=') == (char *)NULL) continue;
+ if(strchr(buf, '=') == NULL) continue;
/* Parse out keywords */
p=firsttok(&begin, "= \t\n");
@@ -890,7 +889,7 @@ bool_t read_config()
}
if(p && q) {
if(strcasecmp(p, "Root") == 0) {
- if((root = strdup(q)) == (char *)NULL) {
+ if((root = strdup(q)) == NULL) {
die("parse_config() -- strdup() failed");
}
@@ -904,7 +903,7 @@ bool_t read_config()
port = atoi(r);
}
- if((mailhost = strdup(q)) == (char *)NULL) {
+ if((mailhost = strdup(q)) == NULL) {
die("parse_config() -- strdup() failed");
}
@@ -949,7 +948,7 @@ bool_t read_config()
mail_domain = strdup(q);
}
- if(mail_domain == (char *)NULL) {
+ if(mail_domain == NULL) {
die("parse_config() -- strdup() failed");
}
rewrite_domain = True;
@@ -1025,7 +1024,7 @@ bool_t read_config()
}
}
else if(strcasecmp(p, "TLSCert") == 0) {
- if((tls_cert = strdup(q)) == (char *)NULL) {
+ if((tls_cert = strdup(q)) == NULL) {
die("parse_config() -- strdup() failed");
}
@@ -1036,7 +1035,7 @@ bool_t read_config()
#endif
/* Command-line overrides these */
else if(strcasecmp(p, "AuthUser") == 0 && !auth_user) {
- if((auth_user = strdup(q)) == (char *)NULL) {
+ if((auth_user = strdup(q)) == NULL) {
die("parse_config() -- strdup() failed");
}
@@ -1045,7 +1044,7 @@ bool_t read_config()
}
}
else if(strcasecmp(p, "AuthPass") == 0 && !auth_pass) {
- if((auth_pass = strdup(q)) == (char *)NULL) {
+ if((auth_pass = strdup(q)) == NULL) {
die("parse_config() -- strdup() failed");
}
@@ -1054,7 +1053,7 @@ bool_t read_config()
}
}
else if(strcasecmp(p, "AuthMethod") == 0 && !auth_method) {
- if((auth_method = strdup(q)) == (char *)NULL) {
+ if((auth_method = strdup(q)) == NULL) {
die("parse_config() -- strdup() failed");
}
@@ -1119,14 +1118,11 @@ int smtp_open(char *host, int port)
char buf[(BUF_SZ + 1)];
/* Init SSL stuff */
- SSL_CTX *ctx;
- SSL_METHOD *meth;
+ SSL_CTX *ctx = NULL;
X509 *server_cert;
-
SSL_load_error_strings();
SSLeay_add_ssl_algorithms();
- meth=SSLv23_client_method();
- ctx = SSL_CTX_new(meth);
+ ctx = SSL_CTX_new(SSLv23_client_method());
if(!ctx) {
log_event(LOG_ERR, "No SSL support initiated\n");
return(-1);
@@ -1310,7 +1306,7 @@ char *fd_gets(char *buf, int size, int f
buf[i++] = c;
}
}
- buf[i] = (char)NULL;
+ buf[i] = '\0';
return(buf);
}
@@ -1434,14 +1430,14 @@ int ssmtp(char *argv[])
}
if((p = strtok(pw->pw_gecos, ";,"))) {
- if((gecos = strdup(p)) == (char *)NULL) {
+ if((gecos = strdup(p)) == NULL) {
die("ssmtp() -- strdup() failed");
}
}
revaliases(pw);
/* revaliases() may have defined this */
- if(uad == (char *)NULL) {
+ if(uad == NULL) {
uad = append_domain(pw->pw_name);
}
@@ -1489,7 +1485,7 @@ int ssmtp(char *argv[])
/* Try to log in if username was supplied */
if(auth_user) {
#ifdef MD5AUTH
- if(auth_pass == (char *)NULL) {
+ if(auth_pass == NULL) {
auth_pass = strdup("");
}
@@ -1508,7 +1504,7 @@ int ssmtp(char *argv[])
else {
#endif
memset(buf, 0, bufsize);
- to64frombits(buf, auth_user, strlen(auth_user));
+ to64frombits(buf, (unsigned char *)auth_user, strlen(auth_user));
if (use_oldauth) {
outbytes += smtp_write(sock, "AUTH LOGIN %s", buf);
}
@@ -1520,7 +1516,7 @@ int ssmtp(char *argv[])
}
/* we assume server asked us for Username */
memset(buf, 0, bufsize);
- to64frombits(buf, auth_user, strlen(auth_user));
+ to64frombits(buf, (unsigned char *)auth_user, strlen(auth_user));
outbytes += smtp_write(sock, buf);
}
@@ -1530,7 +1526,7 @@ int ssmtp(char *argv[])
}
memset(buf, 0, bufsize);
- to64frombits(buf, auth_pass, strlen(auth_pass));
+ to64frombits(buf, (unsigned char *)auth_pass, strlen(auth_pass));
#ifdef MD5AUTH
}
#endif
@@ -1737,7 +1733,7 @@ char **parse_options(int argc, char *arg
j = 0;
add = 1;
- while(argv[i][++j] != (char)NULL) {
+ while(argv[i][++j] != '\0') {
switch(argv[i][j]) {
#ifdef INET6
case '6':
@@ -1755,14 +1751,14 @@ char **parse_options(int argc, char *arg
if((!argv[i][(j + 1)])
&& argv[(i + 1)]) {
auth_user = strdup(argv[i+1]);
- if(auth_user == (char *)NULL) {
+ if(auth_user == NULL) {
die("parse_options() -- strdup() failed");
}
add++;
}
else {
auth_user = strdup(argv[i]+j+1);
- if(auth_user == (char *)NULL) {
+ if(auth_user == NULL) {
die("parse_options() -- strdup() failed");
}
}
@@ -1772,14 +1768,14 @@ char **parse_options(int argc, char *arg
if((!argv[i][(j + 1)])
&& argv[(i + 1)]) {
auth_pass = strdup(argv[i+1]);
- if(auth_pass == (char *)NULL) {
+ if(auth_pass == NULL) {
die("parse_options() -- strdup() failed");
}
add++;
}
else {
auth_pass = strdup(argv[i]+j+1);
- if(auth_pass == (char *)NULL) {
+ if(auth_pass == NULL) {
die("parse_options() -- strdup() failed");
}
}
@@ -1870,14 +1866,14 @@ char **parse_options(int argc, char *arg
case 'F':
if((!argv[i][(j + 1)]) && argv[(i + 1)]) {
minus_F = strdup(argv[(i + 1)]);
- if(minus_F == (char *)NULL) {
+ if(minus_F == NULL) {
die("parse_options() -- strdup() failed");
}
add++;
}
else {
minus_F = strdup(argv[i]+j+1);
- if(minus_F == (char *)NULL) {
+ if(minus_F == NULL) {
die("parse_options() -- strdup() failed");
}
}
@@ -1889,14 +1885,14 @@ char **parse_options(int argc, char *arg
case 'r':
if((!argv[i][(j + 1)]) && argv[(i + 1)]) {
minus_f = strdup(argv[(i + 1)]);
- if(minus_f == (char *)NULL) {
+ if(minus_f == NULL) {
die("parse_options() -- strdup() failed");
}
add++;
}
else {
minus_f = strdup(argv[i]+j+1);
- if(minus_f == (char *)NULL) {
+ if(minus_f == NULL) {
die("parse_options() -- strdup() failed");
}
}
--- a/base64.c
+++ b/base64.c
@@ -31,7 +31,7 @@ static const char base64val[] = {
};
#define DECODE64(c) (isascii(c) ? base64val[c] : BAD)
-void to64frombits(unsigned char *out, const unsigned char *in, int inlen)
+void to64frombits(char *out, const unsigned char *in, int inlen)
/* raw bytes in quasi-big-endian order to base 64 string (NUL-terminated) */
{
for (; inlen >= 3; inlen -= 3)
@@ -57,7 +57,7 @@ void to64frombits(unsigned char *out, co
*out = '\0';
}
-int from64tobits(char *out, const char *in)
+int from64tobits(unsigned char *out, const char *in)
/* base 64 to raw bytes in quasi-big-endian order, returning count of bytes */
{
int len = 0;
--- a/ssmtp.h
+++ b/ssmtp.h
@@ -41,5 +41,5 @@ typedef struct string_list rcpt_t;
void get_arpadate(char *);
/* base64.c */
-void to64frombits(unsigned char *, const unsigned char *, int);
-int from64tobits(char *, const char *);
+void to64frombits(char *, const unsigned char *, int);
+int from64tobits(unsigned char *, const char *);