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[PATCH 1/3] Generate lists and use symbols in --libcurl code output.

From: Colin Hogben <curl_at_pythontech.co.uk>
Date: Thu, 23 Feb 2012 09:43:37 +0000

This patch improves the output of curl's --libcurl option by
generating code which builds curl_httppost and curl_slist lists, and
uses symbolic names for enum and flag values. Variants of the
my_setopt macro in tool_setopt.h are added in order to pass extra type
information to the code-generation step in tool_setopt.c.

If curl is configured with --disable-libcurl-option then the macros
call curl_easy_setopt directly.

---
 src/tool_easysrc.c |  162 ++++++++++++++++++---
 src/tool_easysrc.h |   18 ++-
 src/tool_operate.c |   57 ++++----
 src/tool_setopt.c  |  403 ++++++++++++++++++++++++++++++++++++++++++++++++----
 src/tool_setopt.h  |   63 ++++++++-
 5 files changed, 615 insertions(+), 88 deletions(-)
diff --git a/src/tool_easysrc.c b/src/tool_easysrc.c
index ba1e78e..f672386 100644
--- a/src/tool_easysrc.c
+++ b/src/tool_easysrc.c
@@ -37,8 +37,13 @@
 
 /* global variable definitions, for easy-interface source code generation */
 
-struct curl_slist *easysrc = NULL;
-struct curl_slist *easysrc_remarks = NULL;
+struct curl_slist *easysrc_decl = NULL; /* Variable declarations */
+struct curl_slist *easysrc_data = NULL; /* Build slists, forms etc. */
+struct curl_slist *easysrc_code = NULL; /* Setopt calls */
+struct curl_slist *easysrc_toohard = NULL; /* Unconvertible setopt */
+struct curl_slist *easysrc_clean = NULL;  /* Clean up allocated data */
+int easysrc_form_count = 0;
+int easysrc_slist_count = 0;
 
 static const char *const srchead[]={
   "/********* Sample code generated by the curl command line tool **********",
@@ -50,8 +55,117 @@ static const char *const srchead[]={
   "int main(int argc, char *argv[])",
   "{",
   "  CURLcode ret;",
+  "  CURL *hnd;",
   NULL
 };
+/* easysrc_decl declarations come here */
+/* easysrc_data initialisations come here */
+/* easysrc_code statements come here */
+static const char *const srchard[]={
+  "/* Here is a list of options the curl code used that cannot get generated",
+  "   as source easily. You may select to either not use them or implement",
+  "   them yourself.",
+  "",
+  NULL
+};
+static const char *const srcend[]={
+  "",
+  "  return (int)ret;",
+  "}",
+  "/**** End of sample code ****/",
+  NULL
+};
+
+/* Clean up all source code if we run out of memory */
+static void easysrc_free(void)
+{
+  curl_slist_free_all(easysrc_decl);
+  easysrc_decl = NULL;
+  curl_slist_free_all(easysrc_data);
+  easysrc_data = NULL;
+  curl_slist_free_all(easysrc_code);
+  easysrc_code = NULL;
+  curl_slist_free_all(easysrc_toohard);
+  easysrc_toohard = NULL;
+  curl_slist_free_all(easysrc_clean);
+  easysrc_clean = NULL;
+}
+
+/* Add a source line to the main code or remarks */
+CURLcode easysrc_add(struct curl_slist **plist, const char *line)
+{
+  CURLcode ret = CURLE_OK;
+  struct curl_slist *list =
+    curl_slist_append(*plist, line);
+  if(!list) {
+    easysrc_free();
+    ret = CURLE_OUT_OF_MEMORY;
+  }
+  else
+    *plist = list;
+  return ret;
+}
+
+CURLcode easysrc_addf(struct curl_slist **plist, const char *fmt, ...)
+{
+  CURLcode ret;
+  char *bufp;
+  va_list ap;
+  va_start(ap, fmt);
+  bufp = curlx_mvaprintf(fmt, ap);
+  va_end(ap);
+  if(! bufp) {
+    ret = CURLE_OUT_OF_MEMORY;
+  }
+  else {
+    ret = easysrc_add(plist, bufp);
+    curl_free(bufp);
+  }
+  return ret;
+}
+
+#define CHKRET(v) do {CURLcode ret = (v); if(ret) return ret;} while(0)
+
+CURLcode easysrc_init(void)
+{
+  CHKRET(easysrc_add(&easysrc_code,
+                     "hnd = curl_easy_init();"));
+  return CURLE_OK;
+}
+
+CURLcode easysrc_perform(void)
+{
+  /* Note any setopt calls which we could not convert */
+  if(easysrc_toohard) {
+    int i;
+    struct curl_slist *ptr;
+    const char *c;
+    CHKRET(easysrc_add(&easysrc_code, ""));
+    /* Preamble comment */
+    for(i=0; ((c = srchard[i]) != '\0'); i++)
+      CHKRET(easysrc_add(&easysrc_code, c));
+    /* Each unconverted option */
+    for(ptr=easysrc_toohard; ptr; ptr = ptr->next)
+      CHKRET(easysrc_add(&easysrc_code, ptr->data));
+    CHKRET(easysrc_add(&easysrc_code, ""));
+    CHKRET(easysrc_add(&easysrc_code, "*/"));
+
+    curl_slist_free_all(easysrc_toohard);
+    easysrc_toohard = NULL;
+  }
+
+  CHKRET(easysrc_add(&easysrc_code, ""));
+  CHKRET(easysrc_add(&easysrc_code, "ret = curl_easy_perform(hnd);"));
+  return CURLE_OK;
+}
+
+CURLcode easysrc_cleanup(void)
+{
+  CHKRET(easysrc_add(&easysrc_code, ""));
+  CHKRET(easysrc_add(&easysrc_code, "curl_easy_cleanup(hnd);"));
+  CHKRET(easysrc_add(&easysrc_code, "hnd = NULL;"));
+  return CURLE_OK;
+}
 
 void dumpeasysrc(struct Configurable *config)
 {
@@ -76,40 +190,40 @@ void dumpeasysrc(struct Configurable *config)
       for(i=0; ((c = srchead[i]) != '\0'); i++)
         fprintf(out, "%s\n", c);
 
-      ptr = easysrc;
-      while(ptr) {
+      /* Declare variables used for complex setopt values */
+      for(ptr=easysrc_decl; ptr; ptr = ptr->next)
         fprintf(out, "  %s\n", ptr->data);
-        ptr = ptr->next;
+
+      /* Set up complex values for setopt calls */
+      if(easysrc_data) {
+        fprintf(out, "\n");
+
+        for(ptr=easysrc_data; ptr; ptr = ptr->next)
+          fprintf(out, "  %s\n", ptr->data);
       }
 
-      ptr = easysrc_remarks;
-      if(ptr) {
-        fprintf(out,
-                "\n  /* Here is a list of options the curl code"
-                " used that cannot get generated\n"
-                "     as source easily. You may select to either"
-                " not use them or implement\n     them yourself.\n"
-                "\n");
-        while(ptr) {
+      fprintf(out, "\n");
+      for(ptr=easysrc_code; ptr; ptr = ptr->next) {
+        if(ptr->data[0]) {
           fprintf(out, "  %s\n", ptr->data);
-          ptr = ptr->next;
         }
-        fprintf(out, "\n  */\n");
+        else {
+          fprintf(out, "\n");
+        }
       }
 
-      fprintf(out,
-              "  return (int)ret;\n"
-              "}\n"
-              "/**** End of sample code ****/\n");
+      for(ptr=easysrc_clean; ptr; ptr = ptr->next)
+        fprintf(out, "  %s\n", ptr->data);
+
+      for(i=0; ((c = srcend[i]) != '\0'); i++)
+        fprintf(out, "%s\n", c);
+
       if(fopened)
         fclose(out);
     }
   }
 
-  curl_slist_free_all(easysrc_remarks);
-  curl_slist_free_all(easysrc);
-  easysrc_remarks = NULL;
-  easysrc = NULL;
+  easysrc_free();
 }
 
 #endif /* CURL_DISABLE_LIBCURL_OPTION */
diff --git a/src/tool_easysrc.h b/src/tool_easysrc.h
index 8e81d55..1d2c027 100644
--- a/src/tool_easysrc.h
+++ b/src/tool_easysrc.h
@@ -26,12 +26,22 @@
 
 /* global variable declarations, for easy-interface source code generation */
 
-extern struct curl_slist *easysrc;
-extern struct curl_slist *easysrc_remarks;
+extern struct curl_slist *easysrc_decl; /* Variable declarations */
+extern struct curl_slist *easysrc_data; /* Build slists, forms etc. */
+extern struct curl_slist *easysrc_code; /* Setopt calls etc. */
+extern struct curl_slist *easysrc_toohard; /* Unconvertible setopt */
+extern struct curl_slist *easysrc_clean;  /* Clean up (reverse order) */
 
+extern int easysrc_form_count;  /* Number of curl_httppost variables */
+extern int easysrc_slist_count; /* Number of curl_slist variables */
+
+extern CURLcode easysrc_init(void);
+extern CURLcode easysrc_add(struct curl_slist **plist, const char *bupf);
+extern CURLcode easysrc_addf(struct curl_slist **plist, const char *fmt, ...);
+extern CURLcode easysrc_perform(void);
+extern CURLcode easysrc_cleanup(void);
 void dumpeasysrc(struct Configurable *config);
 
-#endif /* CURL_DISABLE_LIBCIRL_CMD */
+#endif /* CURL_DISABLE_LIBCURL_OPTION */
 
 #endif /* HEADER_CURL_TOOL_EASYSRC_H */
-
diff --git a/src/tool_operate.c b/src/tool_operate.c
index 3e496bf..d070ea6 100644
--- a/src/tool_operate.c
+++ b/src/tool_operate.c
@@ -355,11 +355,9 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
   }
 
 #ifndef CURL_DISABLE_LIBCURL_OPTION
-  /* This is the first entry added to easysrc and it initializes the slist */
-  easysrc = curl_slist_append(easysrc, "CURL *hnd = curl_easy_init();");
-  if(!easysrc) {
+  res = easysrc_init();
+  if(res) {
     helpf(config->errors, "out of memory\n");
-    res = CURLE_OUT_OF_MEMORY;
     goto quit_curl;
   }
 #endif
@@ -835,25 +833,25 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
 
           /* new in libcurl 7.5 */
           if(config->proxy)
-            my_setopt(curl, CURLOPT_PROXYTYPE, config->proxyver);
+            my_setopt_enum(curl, CURLOPT_PROXYTYPE, config->proxyver);
 
           /* new in libcurl 7.10 */
           if(config->socksproxy) {
             my_setopt_str(curl, CURLOPT_PROXY, config->socksproxy);
-            my_setopt(curl, CURLOPT_PROXYTYPE, config->socksver);
+            my_setopt_enum(curl, CURLOPT_PROXYTYPE, config->socksver);
           }
 
           /* new in libcurl 7.10.6 */
           if(config->proxyanyauth)
-            my_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
+            my_setopt_flags(curl, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
           else if(config->proxynegotiate)
-            my_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_GSSNEGOTIATE);
+            my_setopt_flags(curl, CURLOPT_PROXYAUTH, CURLAUTH_GSSNEGOTIATE);
           else if(config->proxyntlm)
-            my_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_NTLM);
+            my_setopt_flags(curl, CURLOPT_PROXYAUTH, CURLAUTH_NTLM);
           else if(config->proxydigest)
-            my_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_DIGEST);
+            my_setopt_flags(curl, CURLOPT_PROXYAUTH, CURLAUTH_DIGEST);
           else if(config->proxybasic)
-            my_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_BASIC);
+            my_setopt_flags(curl, CURLOPT_PROXYAUTH, CURLAUTH_BASIC);
 
           /* new in libcurl 7.19.4 */
           my_setopt(curl, CURLOPT_NOPROXY, config->noproxy);
@@ -896,7 +894,7 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
                       config->postfieldsize);
             break;
           case HTTPREQ_POST:
-            my_setopt(curl, CURLOPT_HTTPPOST, config->httppost);
+            my_setopt_httppost(curl, CURLOPT_HTTPPOST, config->httppost);
             break;
           default:
             break;
@@ -905,18 +903,18 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
           my_setopt_str(curl, CURLOPT_REFERER, config->referer);
           my_setopt(curl, CURLOPT_AUTOREFERER, config->autoreferer);
           my_setopt_str(curl, CURLOPT_USERAGENT, config->useragent);
-          my_setopt(curl, CURLOPT_HTTPHEADER, config->headers);
+          my_setopt_slist(curl, CURLOPT_HTTPHEADER, config->headers);
 
           /* new in libcurl 7.5 */
           my_setopt(curl, CURLOPT_MAXREDIRS, config->maxredirs);
 
           /* new in libcurl 7.9.1 */
           if(config->httpversion)
-            my_setopt(curl, CURLOPT_HTTP_VERSION, config->httpversion);
+            my_setopt_enum(curl, CURLOPT_HTTP_VERSION, config->httpversion);
 
           /* new in libcurl 7.10.6 (default is Basic) */
           if(config->authtype)
-            my_setopt(curl, CURLOPT_HTTPAUTH, config->authtype);
+            my_setopt_flags(curl, CURLOPT_HTTPAUTH, config->authtype);
 
           /* curl 7.19.1 (the 301 version existed in 7.18.2) */
           my_setopt(curl, CURLOPT_POSTREDIR, config->post301 |
@@ -1011,9 +1009,9 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
         }
 
         my_setopt(curl, CURLOPT_CRLF, config->crlf);
-        my_setopt(curl, CURLOPT_QUOTE, config->quote);
-        my_setopt(curl, CURLOPT_POSTQUOTE, config->postquote);
-        my_setopt(curl, CURLOPT_PREQUOTE, config->prequote);
+        my_setopt_slist(curl, CURLOPT_QUOTE, config->quote);
+        my_setopt_slist(curl, CURLOPT_POSTQUOTE, config->postquote);
+        my_setopt_slist(curl, CURLOPT_PREQUOTE, config->prequote);
 
 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
         {
@@ -1034,8 +1032,8 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
         }
 #endif
 
-        my_setopt(curl, CURLOPT_SSLVERSION, config->ssl_version);
-        my_setopt(curl, CURLOPT_TIMECONDITION, config->timecond);
+        my_setopt_enum(curl, CURLOPT_SSLVERSION, config->ssl_version);
+        my_setopt_enum(curl, CURLOPT_TIMECONDITION, config->timecond);
         my_setopt(curl, CURLOPT_TIMEVALUE, config->condtime);
         my_setopt_str(curl, CURLOPT_CUSTOMREQUEST, config->customrequest);
         my_setopt(curl, CURLOPT_STDERR, config->errors);
@@ -1054,7 +1052,7 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
         }
 
         /* new in libcurl 7.6.2: */
-        my_setopt(curl, CURLOPT_TELNETOPTIONS, config->telnet_options);
+        my_setopt_slist(curl, CURLOPT_TELNETOPTIONS, config->telnet_options);
 
         /* new in libcurl 7.7: */
         my_setopt_str(curl, CURLOPT_RANDOM_FILE, config->random_file);
@@ -1118,7 +1116,7 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
 
         /* new in curl 7.16.1 */
         if(config->ftp_ssl_ccc)
-          my_setopt(curl, CURLOPT_FTP_SSL_CCC, config->ftp_ssl_ccc_mode);
+          my_setopt_enum(curl, CURLOPT_FTP_SSL_CCC, config->ftp_ssl_ccc_mode);
 
 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
         {
@@ -1191,16 +1189,16 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
           my_setopt_str(curl, CURLOPT_MAIL_FROM, config->mail_from);
 
         if(config->mail_rcpt)
-          my_setopt(curl, CURLOPT_MAIL_RCPT, config->mail_rcpt);
+          my_setopt_slist(curl, CURLOPT_MAIL_RCPT, config->mail_rcpt);
 
         /* curl 7.20.x */
         if(config->ftp_pret)
           my_setopt(curl, CURLOPT_FTP_USE_PRET, TRUE);
 
         if(config->proto_present)
-          my_setopt(curl, CURLOPT_PROTOCOLS, config->proto);
+          my_setopt_flags(curl, CURLOPT_PROTOCOLS, config->proto);
         if(config->proto_redir_present)
-          my_setopt(curl, CURLOPT_REDIR_PROTOCOLS, config->proto_redir);
+          my_setopt_flags(curl, CURLOPT_REDIR_PROTOCOLS, config->proto_redir);
 
         if((urlnode->flags & GETOUT_USEREMOTE)
            && config->content_disposition) {
@@ -1216,7 +1214,7 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
 
         if(config->resolve)
           /* new in 7.21.3 */
-          my_setopt(curl, CURLOPT_RESOLVE, config->resolve);
+          my_setopt_slist(curl, CURLOPT_RESOLVE, config->resolve);
 
         /* new in 7.21.4 */
         if(curlinfo->features & CURL_VERSION_TLSAUTH_SRP) {
@@ -1252,8 +1250,8 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
         retrystart = tvnow();
 
 #ifndef CURL_DISABLE_LIBCURL_OPTION
-        if(!curl_slist_append(easysrc, "ret = curl_easy_perform(hnd);")) {
-          res = CURLE_OUT_OF_MEMORY;
+        res = easysrc_perform();
+        if(res) {
           goto show_error;
         }
 #endif
@@ -1580,8 +1578,7 @@ int operate(struct Configurable *config, int argc, argv_item_t argv[])
     config->easy = curl = NULL;
   }
 #ifndef CURL_DISABLE_LIBCURL_OPTION
-  if(easysrc)
-    curl_slist_append(easysrc, "curl_easy_cleanup(hnd);");
+  easysrc_cleanup();
 #endif
 
   /* Close function-local opened file descriptors */
diff --git a/src/tool_setopt.c b/src/tool_setopt.c
index 6fc6047..5be4c3b 100644
--- a/src/tool_setopt.c
+++ b/src/tool_setopt.c
@@ -35,43 +35,397 @@
 
 #include "memdebug.h" /* keep this as LAST include */
 
+/* Lookup tables for converting setopt values back to symbols */
+/* For enums, values may be in any order. */
+/* For bit masks, put combinations first, then single bits, */
+/* and finally any "NONE" value. */
+
+#define NV(e) {#e, e}
+#define NVEND {NULL, 0}         /* sentinel to mark end of list */
+
+const NameValue setopt_nv_CURLPROXY[] = {
+  NV(CURLPROXY_HTTP),
+  NV(CURLPROXY_HTTP_1_0),
+  NV(CURLPROXY_SOCKS4),
+  NV(CURLPROXY_SOCKS5),
+  NV(CURLPROXY_SOCKS4A),
+  NV(CURLPROXY_SOCKS5_HOSTNAME),
+  NVEND,
+};
+
+const NameValue setopt_nv_CURLAUTH[] = {
+  NV(CURLAUTH_ANY),             /* combination */
+  NV(CURLAUTH_ANYSAFE),         /* combination */
+  NV(CURLAUTH_BASIC),
+  NV(CURLAUTH_DIGEST),
+  NV(CURLAUTH_GSSNEGOTIATE),
+  NV(CURLAUTH_NTLM),
+  NV(CURLAUTH_DIGEST_IE),
+  NV(CURLAUTH_NTLM_WB),
+  NV(CURLAUTH_ONLY),
+  NV(CURLAUTH_NONE),
+  NVEND,
+};
+
+const NameValue setopt_nv_CURL_HTTP_VERSION[] = {
+  NV(CURL_HTTP_VERSION_NONE),
+  NV(CURL_HTTP_VERSION_1_0),
+  NV(CURL_HTTP_VERSION_1_1),
+  NVEND,
+};
+
+const NameValue setopt_nv_CURL_SSLVERSION[] = {
+  NV(CURL_SSLVERSION_DEFAULT),
+  NV(CURL_SSLVERSION_TLSv1),
+  NV(CURL_SSLVERSION_SSLv2),
+  NV(CURL_SSLVERSION_SSLv3),
+  NVEND,
+};
+
+const NameValue setopt_nv_CURL_TIMECOND[] = {
+  NV(CURL_TIMECOND_IFMODSINCE),
+  NV(CURL_TIMECOND_IFUNMODSINCE),
+  NV(CURL_TIMECOND_LASTMOD),
+  NV(CURL_TIMECOND_NONE),
+  NVEND,
+};
+
+const NameValue setopt_nv_CURLFTPSSL_CCC[] = {
+  NV(CURLFTPSSL_CCC_NONE),
+  NV(CURLFTPSSL_CCC_PASSIVE),
+  NV(CURLFTPSSL_CCC_ACTIVE),
+  NVEND,
+};
+
+/* These mappings essentially triplicated - see
+ * tool_libinfo.c and tool_paramhlp.c */
+const NameValue setopt_nv_CURLPROTO[] = {
+  NV(CURLPROTO_ALL),            /* combination */
+  NV(CURLPROTO_DICT),
+  NV(CURLPROTO_FILE),
+  NV(CURLPROTO_FTP),
+  NV(CURLPROTO_FTPS),
+  NV(CURLPROTO_GOPHER),
+  NV(CURLPROTO_HTTP),
+  NV(CURLPROTO_HTTPS),
+  NV(CURLPROTO_IMAP),
+  NV(CURLPROTO_IMAPS),
+  NV(CURLPROTO_LDAP),
+  NV(CURLPROTO_LDAPS),
+  NV(CURLPROTO_POP3),
+  NV(CURLPROTO_POP3S),
+  NV(CURLPROTO_RTSP),
+  NV(CURLPROTO_SCP),
+  NV(CURLPROTO_SFTP),
+  NV(CURLPROTO_SMTP),
+  NV(CURLPROTO_SMTPS),
+  NV(CURLPROTO_TELNET),
+  NV(CURLPROTO_TFTP),
+  NVEND,
+};
+
+/* Format and add code; jump to nomem on malloc error */
+#define ADD(args) do { \
+  ret = easysrc_add args; \
+  if(ret) \
+    goto nomem; \
+} while(0)
+#define ADDF(args) do { \
+  ret = easysrc_addf args; \
+  if(ret) \
+    goto nomem; \
+} while(0)
+
+#define DECL0(s) ADD((&easysrc_decl, s))
+#define DECL1(f,a) ADDF((&easysrc_decl, f,a))
+
+#define DATA0(s) ADD((&easysrc_data, s))
+#define DATA1(f,a) ADDF((&easysrc_data, f,a))
+#define DATA2(f,a,b) ADDF((&easysrc_data, f,a,b))
+#define DATA3(f,a,b,c) ADDF((&easysrc_data, f,a,b,c))
+
+#define CODE0(s) ADD((&easysrc_code, s))
+#define CODE1(f,a) ADDF((&easysrc_code, f,a))
+#define CODE2(f,a,b) ADDF((&easysrc_code, f,a,b))
+#define CODE3(f,a,b,c) ADDF((&easysrc_code, f,a,b,c))
+
+#define CLEAN0(s) ADD((&easysrc_clean, s))
+#define CLEAN1(f,a) ADDF((&easysrc_clean, f,a))
+
+#define REM0(s) ADD((&easysrc_toohard, s))
+#define REM1(f,a) ADDF((&easysrc_toohard, f,a))
+#define REM2(f,a,b) ADDF((&easysrc_toohard, f,a,b))
+
+/* Escape string to C string syntax.  Return NULL if out of memory.
+ * Is this correct for those wacky EBCDIC guys? */
+static char *c_escape(const char *str)
+{
+  size_t len = 0;
+  const char *s;
+  unsigned char c;
+  char *escaped, *e;
+  /* Allocate space based on worst-case */
+  len = strlen(str);
+  escaped = malloc(4 * len + 1);
+  if(!escaped)
+    return NULL;
+
+  e = escaped;
+  for(s=str; (c=*s) != '\0'; s++) {
+    if(c=='\n') {
+      strcpy(e, "\\n");
+      e += 2;
+    }
+    else if(c=='\r') {
+      strcpy(e, "\\r");
+      e += 2;
+    }
+    else if(c=='\t') {
+      strcpy(e, "\\t");
+      e += 2;
+    }
+    else if(c=='\\') {
+      strcpy(e, "\\\\");
+      e += 2;
+    }
+    else if(c=='"') {
+      strcpy(e, "\\\"");
+      e += 2;
+    }
+    else if(! isprint(c)) {
+      sprintf(e, "\\%03o", c);
+      e += 4;
+    }
+    else
+      *e++ = c;
+  }
+  *e = '\0';
+  return escaped;
+}
+
+/* setopt wrapper for enum types */
+CURLcode tool_setopt_enum(CURL *curl, struct Configurable *config,
+                          const char *name, CURLoption tag,
+                          const NameValue *nvlist, long lval)
+{
+  CURLcode ret = CURLE_OK;
+  bool skip = FALSE;
+
+  ret = curl_easy_setopt(curl, tag, lval);
+  if(!lval)
+    skip = TRUE;
+
+  if(config->libcurl && !skip && !ret) {
+    /* we only use this for real if --libcurl was used */
+    const NameValue *nv = NULL;
+    for(nv=nvlist; nv->name; nv++) {
+      if(nv->value == lval) break; /* found it */
+    }
+    if(! nv->name) {
+      /* If no definition was found, output an explicit value.
+       * This could happen if new values are defined and used
+       * but the NameValue list is not updated. */
+      CODE2("curl_easy_setopt(hnd, %s, %ldL);", name, lval);
+    }
+    else {
+      CODE2("curl_easy_setopt(hnd, %s, (long)%s);", name, nv->name);
+    }
+  }
+
+ nomem:
+  return ret;
+}
+
+/* setopt wrapper for bit mask */
+CURLcode tool_setopt_flags(CURL *curl, struct Configurable *config,
+                           const char *name, CURLoption tag,
+                           const NameValue *nvlist, long lval)
+{
+  CURLcode ret = CURLE_OK;
+  bool skip = FALSE;
+
+  ret = curl_easy_setopt(curl, tag, lval);
+  if(!lval)
+    skip = TRUE;
+
+  if(config->libcurl && !skip && !ret) {
+    /* we only use this for real if --libcurl was used */
+    char preamble[80];          /* should accommodate any symbol name */
+    long rest = lval;           /* bits not handled yet */
+    const NameValue *nv = NULL;
+    snprintf(preamble, sizeof(preamble),
+             "curl_easy_setopt(hnd, %s, ", name);
+    for(nv=nvlist; nv->name; nv++) {
+      if((nv->value & ~ rest) == 0) {
+        /* all value flags contained in rest */
+        rest &= ~ nv->value;    /* remove bits handled here */
+        CODE3("%s(long)%s%s",
+              preamble, nv->name, rest ? " |" : ");");
+        if(!rest)
+          break;                /* handled them all */
+        /* replace with all spaces for continuation line */
+        sprintf(preamble, "%*s", strlen(preamble), "");
+      }
+    }
+    /* If any bits have no definition, output an explicit value.
+     * This could happen if new bits are defined and used
+     * but the NameValue list is not updated. */
+    if(rest)
+      CODE2("%s%ldL);", preamble, rest);
+  }
+
+ nomem:
+  return ret;
+}
+
+/* setopt wrapper for CURLOPT_HTTPPOST */
+CURLcode tool_setopt_httppost(CURL *curl, struct Configurable *config,
+                              const char *name, CURLoption tag,
+                              struct curl_httppost *post)
+{
+  CURLcode ret = CURLE_OK;
+  bool skip = FALSE;
+
+  ret = curl_easy_setopt(curl, tag, post);
+  if(!post)
+    skip = TRUE;
+
+  if(config->libcurl && !skip && !ret) {
+    struct curl_httppost *pp, *p;
+    int i;
+    /* May use several httppost lists, if multiple POST actions */
+    i = ++ easysrc_form_count;
+    DECL1("struct curl_httppost *post%d;", i);
+    DATA1("post%d = NULL;", i);
+    CLEAN1("curl_formfree(post%d);", i);
+    CLEAN1("post%d = NULL;", i);
+    if(i == 1)
+      DECL0("struct curl_httppost *postend;");
+    DATA0("postend = NULL;");
+    for(p=post; p; p=p->next) {
+      DATA1("curl_formadd(&post%d, &postend,", i);
+      DATA1("             CURLFORM_COPYNAME, \"%s\",", p->name);
+      for(pp=p; pp; pp=pp->more) {
+        /* May be several files uploaded for one name;
+         * these are linked through the 'more' pointer */
+        char *e;
+        e = c_escape(pp->contents);
+        if(!e)
+          goto nomem;
+        if(pp->flags & HTTPPOST_FILENAME) {
+          /* file upload as for -F @filename */
+          DATA1("             CURLFORM_FILE, \"%s\",", e);
+        }
+        else if(pp->flags & HTTPPOST_READFILE) {
+          /* content from file as for -F <filename */
+          DATA1("             CURLFORM_FILECONTENT, \"%s\",", e);
+        }
+        else
+          DATA1("             CURLFORM_COPYCONTENTS, \"%s\",", e);
+        free(e);
+        if(pp->showfilename) {
+          e = c_escape(pp->showfilename);
+          if(!e)
+            goto nomem;
+          DATA1("             CURLFORM_FILENAME, \"%s\",", e);
+          free(e);
+        }
+        if(pp->contenttype) {
+          e = c_escape(pp->contenttype);
+          if(!e)
+            goto nomem;
+          DATA1("             CURLFORM_CONTENTTYPE, \"%s\",", e);
+          free(e);
+        }
+      }
+      DATA0("             CURLFORM_END);");
+    }
+    CODE2("curl_easy_setopt(hnd, %s, post%d);", name, i);
+  }
+
+ nomem:
+  return ret;
+}
+
+/* setopt wrapper for curl_slist options */
+CURLcode tool_setopt_slist(CURL *curl, struct Configurable *config,
+                           const char *name, CURLoption tag,
+                           struct curl_slist *list)
+{
+  CURLcode ret = CURLE_OK;
+  bool skip = FALSE;
+
+  ret = curl_easy_setopt(curl, tag, list);
+  if(!list)
+    skip = TRUE;
+
+  if(config->libcurl && !skip && !ret) {
+    struct curl_slist *s;
+    int i;
+    /* May need several slist variables, so invent name */
+    i = ++ easysrc_slist_count;
+    DECL1("struct curl_slist *slist%d;", i);
+    DATA1("slist%d = NULL;", i);
+    CLEAN1("curl_slist_free_all(slist%d);", i);
+    CLEAN1("slist%d = NULL;", i);
+    for(s=list; s; s=s->next) {
+      char *e = c_escape(s->data);
+      if(!e)
+        goto nomem;
+      DATA3("slist%d = curl_slist_append(slist%d, \"%s\");", i, i, e);
+      free(e);
+    }
+    CODE2("curl_easy_setopt(hnd, %s, slist%d);", name, i);
+  }
+
+ nomem:
+  return ret;
+}
+
+/* generic setopt wrapper for all other options.
+ * Some type information is encoded in the tag value. */
 CURLcode tool_setopt(CURL *curl, bool str, struct Configurable *config,
                      const char *name, CURLoption tag, ...)
 {
   va_list arg;
-  char *bufp;
-  char value[256];
+  char buf[256];
+  const char *value;
   bool remark = FALSE;
   bool skip = FALSE;
+  bool escape = FALSE;
   CURLcode ret = CURLE_OK;
 
   va_start(arg, tag);
 
   if(tag < CURLOPTTYPE_OBJECTPOINT) {
+    /* Value is expected to be a long */
     long lval = va_arg(arg, long);
-    snprintf(value, sizeof(value), "%ldL", lval);
+    snprintf(buf, sizeof(buf), "%ldL", lval);
+    value = buf;
     ret = curl_easy_setopt(curl, tag, lval);
     if(!lval)
       skip = TRUE;
   }
   else if(tag < CURLOPTTYPE_OFF_T) {
+    /* Value is some sort of object pointer */
     void *pval = va_arg(arg, void *);
-    unsigned char *ptr = (unsigned char *)pval;
 
     /* function pointers are never printable */
     if(tag >= CURLOPTTYPE_FUNCTIONPOINT) {
       if(pval) {
-        strcpy(value, "functionpointer"); /* 'value' fits 256 bytes */
+        value = "functionpointer";
         remark = TRUE;
       }
       else
         skip = TRUE;
     }
 
-    else if(pval && str)
-      snprintf(value, sizeof(value), "\"%s\"", (char *)ptr);
+    else if(pval && str) {
+      value = (char *)pval;
+      escape = TRUE;
+    }
     else if(pval) {
-      strcpy(value, "objectpointer"); /* 'value' fits 256 bytes */
+      value = "objectpointer";
       remark = TRUE;
     }
     else
@@ -81,9 +435,11 @@ CURLcode tool_setopt(CURL *curl, bool str, struct Configurable *config,
 
   }
   else {
+    /* Value is expected to be curl_off_t */
     curl_off_t oval = va_arg(arg, curl_off_t);
-    snprintf(value, sizeof(value),
+    snprintf(buf, sizeof(buf),
              "(curl_off_t)%" CURL_FORMAT_CURL_OFF_T, oval);
+    value = buf;
     ret = curl_easy_setopt(curl, tag, oval);
 
     if(!oval)
@@ -96,32 +452,21 @@ CURLcode tool_setopt(CURL *curl, bool str, struct Configurable *config,
     /* we only use this for real if --libcurl was used */
 
     if(remark)
-      bufp = curlx_maprintf("%s set to a %s", name, value);
-    else
-      bufp = curlx_maprintf("curl_easy_setopt(hnd, %s, %s);", name, value);
-
-    if(!bufp)
-      ret = CURLE_OUT_OF_MEMORY;
+      REM2("%s set to a %s", name, value);
     else {
-      struct curl_slist *list =
-        curl_slist_append(remark?easysrc_remarks:easysrc, bufp);
-
-      curl_free(bufp);
-
-      if(!list) {
-        curl_slist_free_all(easysrc_remarks);
-        curl_slist_free_all(easysrc);
-        easysrc_remarks = NULL;
-        easysrc = NULL;
-        ret = CURLE_OUT_OF_MEMORY;
+      if(escape) {
+        char *escaped = c_escape(value);
+        if(!escaped)
+          goto nomem;
+        CODE2("curl_easy_setopt(hnd, %s, \"%s\");", name, escaped);
+        free(escaped);
       }
-      else if(remark)
-        easysrc_remarks = list;
       else
-        easysrc = list;
+        CODE2("curl_easy_setopt(hnd, %s, %s);", name, value);
     }
   }
 
+ nomem:
   return ret;
 }
 
diff --git a/src/tool_setopt.h b/src/tool_setopt.h
index fcd60f8..4189add 100644
--- a/src/tool_setopt.h
+++ b/src/tool_setopt.h
@@ -35,8 +35,45 @@
 
 #ifndef CURL_DISABLE_LIBCURL_OPTION
 
+/* Associate symbolic names with option values */
+typedef struct {
+  const char *name;
+  long value;
+} NameValue;
+
+extern const NameValue setopt_nv_CURLPROXY[];
+extern const NameValue setopt_nv_CURLAUTH[];
+extern const NameValue setopt_nv_CURL_HTTP_VERSION[];
+extern const NameValue setopt_nv_CURL_SSLVERSION[];
+extern const NameValue setopt_nv_CURL_TIMECOND[];
+extern const NameValue setopt_nv_CURLFTPSSL_CCC[];
+extern const NameValue setopt_nv_CURLPROTO[];
+
+/* Map options to NameValue sets */
+#define setopt_nv_CURLOPT_HTTP_VERSION setopt_nv_CURL_HTTP_VERSION
+#define setopt_nv_CURLOPT_HTTPAUTH setopt_nv_CURLAUTH
+#define setopt_nv_CURLOPT_SSLVERSION setopt_nv_CURL_SSLVERSION
+#define setopt_nv_CURLOPT_TIMECONDITION setopt_nv_CURL_TIMECOND
+#define setopt_nv_CURLOPT_FTP_SSL_CCC setopt_nv_CURLFTPSSL_CCC
+#define setopt_nv_CURLOPT_PROTOCOLS setopt_nv_CURLPROTO
+#define setopt_nv_CURLOPT_REDIR_PROTOCOLS setopt_nv_CURLPROTO
+#define setopt_nv_CURLOPT_PROXYTYPE setopt_nv_CURLPROXY
+#define setopt_nv_CURLOPT_PROXYAUTH setopt_nv_CURLAUTH
+
 /* Intercept setopt calls for --libcurl */
 
+CURLcode tool_setopt_enum(CURL *curl, struct Configurable *config,
+                          const char *name, CURLoption tag,
+                          const NameValue *nv, long lval);
+CURLcode tool_setopt_flags(CURL *curl, struct Configurable *config,
+                           const char *name, CURLoption tag,
+                           const NameValue *nv, long lval);
+CURLcode tool_setopt_httppost(CURL *curl, struct Configurable *config,
+                              const char *name, CURLoption tag,
+                              struct curl_httppost *httppost);
+CURLcode tool_setopt_slist(CURL *curl, struct Configurable *config,
+                           const char *name, CURLoption tag,
+                           struct curl_slist *list);
 CURLcode tool_setopt(CURL *curl, bool str, struct Configurable *config,
                      const char *name, CURLoption tag, ...);
 
@@ -46,11 +83,23 @@ CURLcode tool_setopt(CURL *curl, bool str, struct Configurable *config,
 #define my_setopt_str(x,y,z) \
   SETOPT_CHECK(tool_setopt(x, TRUE, config, #y, y, z))
 
+#define my_setopt_enum(x,y,z) \
+  SETOPT_CHECK(tool_setopt_enum(x, config, #y, y, setopt_nv_ ## y, z))
+
+#define my_setopt_flags(x,y,z) \
+  SETOPT_CHECK(tool_setopt_flags(x, config, #y, y, setopt_nv_ ## y, z))
+
+#define my_setopt_httppost(x,y,z) \
+  SETOPT_CHECK(tool_setopt_httppost(x, config, #y, y, z))
+
+#define my_setopt_slist(x,y,z) \
+  SETOPT_CHECK(tool_setopt_slist(x, config, #y, y, z))
+
 #define res_setopt(x,y,z) tool_setopt(x, FALSE, config, #y, y, z)
 
 #define res_setopt_str(x,y,z) tool_setopt(x, TRUE, config, #y, y, z)
 
-#else
+#else /* CURL_DISABLE_LIBCURL_OPTION */
 
 /* No --libcurl, so pass options directly to library */
 
@@ -60,6 +109,18 @@ CURLcode tool_setopt(CURL *curl, bool str, struct Configurable *config,
 #define my_setopt_str(x,y,z) \
   SETOPT_CHECK(curl_easy_setopt(x, y, z))
 
+#define my_setopt_enum(x,y,z) \
+  SETOPT_CHECK(curl_easy_setopt(x, y, z))
+
+#define my_setopt_flags(x,y,z) \
+  SETOPT_CHECK(curl_easy_setopt(x, y, z))
+
+#define my_setopt_httppost(x,y,z) \
+  SETOPT_CHECK(curl_easy_setopt(x, y, z))
+
+#define my_setopt_slist(x,y,z) \
+  SETOPT_CHECK(curl_easy_setopt(x, y, z))
+
 #define res_setopt(x,y,z) curl_easy_setopt(x,y,z)
 
 #define res_setopt_str(x,y,z) curl_easy_setopt(x,y,z)
-- 
1.6.5.6
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Received on 2001-09-17