doc: fix merge-base ASCII art tab spacing

diff --git a/imap-send.c b/imap-send.c
index d69887da5a8530b204a5f5baf7081787224fc3bd..938c6915858b93b7c860e49e906c45e0e2ea5d03 100644 (file)
--- a/imap-send.c
+++ b/imap-send.c
@@ -34,8 +34,16 @@ typedef void *SSL;
 #include "http.h"
 #endif
 
+#if defined(USE_CURL_FOR_IMAP_SEND) && defined(NO_OPENSSL)
+/* only available option */
+#define USE_CURL_DEFAULT 1
+#else
+/* strictly opt in */
+#define USE_CURL_DEFAULT 0
+#endif
+
 static int verbosity;
-static int use_curl; /* strictly opt in */
+static int use_curl = USE_CURL_DEFAULT;
 
 static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
 
@@ -279,17 +287,20 @@ static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int ve
        SSL_library_init();
        SSL_load_error_strings();
 
-       if (use_tls_only)
-               meth = TLSv1_method();
-       else
-               meth = SSLv23_method();
-
+       meth = SSLv23_method();
        if (!meth) {
                ssl_socket_perror("SSLv23_method");
                return -1;
        }
 
        ctx = SSL_CTX_new(meth);
+       if (!ctx) {
+               ssl_socket_perror("SSL_CTX_new");
+               return -1;
+       }
+
+       if (use_tls_only)
+               SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
 
        if (verify)
                SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
@@ -854,7 +865,6 @@ static char hexchar(unsigned int b)
 static char *cram(const char *challenge_64, const char *user, const char *pass)
 {
        int i, resp_len, encoded_len, decoded_len;
-       HMAC_CTX hmac;
        unsigned char hash[16];
        char hex[33];
        char *response, *response_64, *challenge;
@@ -869,10 +879,8 @@ static char *cram(const char *challenge_64, const char *user, const char *pass)
                                      (unsigned char *)challenge_64, encoded_len);
        if (decoded_len < 0)
                die("invalid challenge %s", challenge_64);
-       HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5());
-       HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len);
-       HMAC_Final(&hmac, hash, NULL);
-       HMAC_CTX_cleanup(&hmac);
+       if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
+               die("HMAC error");
 
        hex[32] = 0;
        for (i = 0; i < 16; i++) {
@@ -881,16 +889,14 @@ static char *cram(const char *challenge_64, const char *user, const char *pass)
        }
 
        /* response: "<user> <digest in hex>" */
-       resp_len = strlen(user) + 1 + strlen(hex) + 1;
-       response = xmalloc(resp_len);
-       sprintf(response, "%s %s", user, hex);
+       response = xstrfmt("%s %s", user, hex);
+       resp_len = strlen(response);
 
-       response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
+       response_64 = xmallocz(ENCODED_SIZE(resp_len));
        encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
                                      (unsigned char *)response, resp_len);
        if (encoded_len < 0)
                die("EVP_EncodeBlock error");
-       response_64[encoded_len] = '\0';
        return (char *)response_64;
 }
 
@@ -1089,11 +1095,6 @@ static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *f
                                srvc->pass = xstrdup(cred.password);
                }
 
-               if (CAP(NOLOGIN)) {
-                       fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
-                       goto bail;
-               }
-
                if (srvc->auth_method) {
                        struct imap_cmd_cb cb;
 
@@ -1117,6 +1118,11 @@ static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *f
                                goto bail;
                        }
                } else {
+                       if (CAP(NOLOGIN)) {
+                               fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
+                                       srvc->user, srvc->host);
+                               goto bail;
+                       }
                        if (!imap->buf.sock.ssl)
                                imap_warn("*** IMAP Warning *** Password is being "
                                          "sent in the clear\n");
@@ -1181,7 +1187,7 @@ static void lf_to_crlf(struct strbuf *msg)
                j++;
        }
 
-       new = xmalloc(j + 1);
+       new = xmallocz(j);
 
        /*
         * Second pass: write the new string.  Note that this loop is
@@ -1414,11 +1420,15 @@ static CURL *setup_curl(struct imap_server_conf *srvc)
        curl_easy_setopt(curl, CURLOPT_PORT, server.port);
 
        if (server.auth_method) {
+#if LIBCURL_VERSION_NUM < 0x072200
+               warning("No LOGIN_OPTIONS support in this cURL version");
+#else
                struct strbuf auth = STRBUF_INIT;
                strbuf_addstr(&auth, "AUTH=");
                strbuf_addstr(&auth, server.auth_method);
                curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
                strbuf_release(&auth);
+#endif
        }
 
        if (!server.use_ssl)
@@ -1504,9 +1514,14 @@ int main(int argc, char **argv)
 
 #ifndef USE_CURL_FOR_IMAP_SEND
        if (use_curl) {
-               warning("--use-curl not supported in this build");
+               warning("--curl not supported in this build");
                use_curl = 0;
        }
+#elif defined(NO_OPENSSL)
+       if (!use_curl) {
+               warning("--no-curl not supported in this build");
+               use_curl = 1;
+       }
 #endif
 
        if (!server.port)