# HG changeset patch
# User Igor Sysoev <igor@sysoev.ru>
# Date 1033059029 0
# Node ID 6ce4755737b4ad174efadd9dd58363dadae550a6
# Parent  cbb38b60495cc025eb55f5e772e27733b46c06b4
nginx-0.0.1-2002-09-26-20:50:29 import

diff --git a/src/core/ngx_hunk.c b/src/core/ngx_hunk.c
--- a/src/core/ngx_hunk.c
+++ b/src/core/ngx_hunk.c
@@ -5,13 +5,15 @@
 ngx_hunk_t *ngx_create_temp_hunk(ngx_pool_t *pool, int size,
                                  int before, int after)
 {
-    ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t));
+    ngx_hunk_t *h;
+
+    ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL);
 
 #if !(HAVE_OFFSET_EQUAL_PTR)
     h->pos.file = h->last.file = 0;
 #endif
 
-    h->pre_start = ngx_palloc(pool, size + before + after);
+    ngx_test_null(h->pre_start, ngx_palloc(pool, size + before + after), NULL);
     h->start = h->pos.mem = h->last.mem = h->pre_start + before;
     h->end = h->last.mem + size;
     h->post_end = h->end + after;
@@ -25,7 +27,9 @@ ngx_hunk_t *ngx_create_temp_hunk(ngx_poo
     
 ngx_hunk_t *ngx_create_hunk_before(ngx_pool_t *pool, ngx_hunk_t *hunk, int size)
 {    
-    ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t));
+    ngx_hunk_t *h;
+
+    ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL);
 
 #if !(HAVE_OFFSET_EQUAL_PTR)
     h->pos.file = h->last.file = 0;
@@ -42,8 +46,8 @@ ngx_hunk_t *ngx_create_hunk_before(ngx_p
         h->file = NULL;
 
     } else {
-        h->pre_start = h->start = h->pos.mem = h->last.mem
-                                                      = ngx_palloc(pool, size);
+        ngx_test_null(h->pre_start, ngx_palloc(pool, size), NULL);
+        h->start = h->pos.mem = h->last.mem = h->pre_start; 
         h->end = h->post_end = h->start + size;
 
         h->type = NGX_HUNK_TEMP;
@@ -56,7 +60,9 @@ ngx_hunk_t *ngx_create_hunk_before(ngx_p
 
 ngx_hunk_t *ngx_create_hunk_after(ngx_pool_t *pool, ngx_hunk_t *hunk, int size)
 {
-    ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t));
+    ngx_hunk_t *h;
+
+    ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL);
 
 #if !(HAVE_OFFSET_EQUAL_PTR)
     h->pos.file = h->last.file = 0;
@@ -74,8 +80,8 @@ ngx_hunk_t *ngx_create_hunk_after(ngx_po
         h->file = NULL;
 
     } else {
-        h->pre_start = h->start = h->pos.mem = h->last.mem =
-                                                        ngx_palloc(pool, size);
+        ngx_test_null(h->pre_start, ngx_palloc(pool, size), NULL);
+        h->start = h->pos.mem = h->last.mem = h->pre_start; 
         h->end = h->post_end = h->start + size;
 
         h->type = NGX_HUNK_TEMP;
diff --git a/src/http/modules/ngx_http_ssi_filter.c b/src/http/modules/ngx_http_ssi_filter.c
--- a/src/http/modules/ngx_http_ssi_filter.c
+++ b/src/http/modules/ngx_http_ssi_filter.c
@@ -39,172 +39,230 @@ int ngx_http_ssi_filter(ngx_http_request
     ngx_http_ssi_filter_ctx_t  *ctx;
     ngx_http_ssi_filter_conf_t *conf;
 
+    if (in == NULL)
+        return next_filter;
+
     ctx = (ngx_http_ssi_filter_ctx_t *)
-                              ngx_get_module_ctx(r->main ? r->main : r,
-                                                 ngx_http_ssi_filter_module);
+                             ngx_get_module_ctx(r, ngx_http_ssi_filter_module);
     if (ctx == NULL) {
         ngx_http_create_ctx(r, ctx,
                             ngx_http_ssi_filter_module,
                             sizeof(ngx_http_ssi_filter_ctx_t));
 
         ctx->state = &ssi_start;
+        ctx->handler = ngx_http_ssi_find_start;
     }
 
-    state = ctx->state;
-    length = ctx->length;
-
     ch = in;
-    p = ch->hunk->pos.mem; 
+    ctx->start = ctx->pos = ch->hunk->pos.mem; 
+
+    for ( ;; ) {
+        if (ctx->handler(r, ctx, ch) == NGX_ERROR)
+            return NGX_ERROR;
 
-    rc = ngx_http_ssi_parse(r, ctx, in);
-    if (rc == NGX_SSI_FOUND) {
+        if (ctx->pos + ctx->length == ch->hunk->last.mem) {
+            ch = ch->next;
+            if (ch == NULL)
+                break;
+
+            ctx->start = ctx->pos = ch->hunk->pos.mem; 
+        }
     }
-
 }
 
 
-static int ngx_http_ssi_parse(ngx_http_request_t *r,
-                              ngx_http_ssi_filter_ctx_t *ctx, ngx_chain_t *in)
+
+static int ngx_http_ssi_find_start(ngx_http_request_t *r,
+                                   ngx_http_ssi_filter_ctx_t *ctx,
+                                   ngx_chain_t *ch)
 {
-    state = ctx->state;
-    length = ctx->length;
+    ngx_http_ssi_parse(r, ctx, ch->hunk);
+
+    if (ctx->state == ssi_command_state
+        || (ctx->length > 0 && ch->next == NULL)
+        || ctx->hunk_with_ssi)
+    {
+        ngx_test_null(h, ngx_palloc(r->pool, sizeof(ngx_hunk_t)), NGX_ERROR);
+#if !(HAVE_OFFSET_EQUAL_PTR)
+        h->pos.file = h->last.file = 0;
+#endif
+        h->pre_start = h->start = h->pos.mem = ctx->start;
+        h->post_end = h->end = h->last.mem = ctx->pos;
+        h->type = NGX_HUNK_TEMP;
+        h->tag = 0;
+        h->file = NULL;
+
+        ngx_add_hunk_to_chain(ctx->last, h, r->pool, NGX_ERROR);
+
+        ngx_test_null(ssi_hunk, ngx_push_array(ctx->ssi_hunks), NGX_ERROR);
+        ssi_hunk->ssi_hunk = h;
+        ssi_hunk->hunk = ch->hunk;
+        ssi_hunk->pos = NULL;
+    }
+
+    if (ctx->state == ssi_command_state)
+        ctx->handler = ngx_http_ssi_find_command;
+    }
+
+    return NGX_OK;
+}
+
+
+static int ngx_http_ssi_find_command(ngx_http_request_t *r,
+                                      ngx_http_ssi_filter_ctx_t *ctx,
+                                       ngx_chain_t *ch)
+{
+    ngx_http_ssi_parse_command(r, ctx, ch->hunk);
+}
+
+
+static char ssi_start[] = "<!--#";
+
+static char ssi_include[] = "include";
+
+static ssi_parser_t ssi_pre_command_state[] = {
+    { 1, (char *) ' ', ssi_pre_command_state, NULL },
+
+    { 7, "include", ssi_command_state, ssi_include_state },
+
+    { 4, "random", ssi_command_state, NULL },
+    { 0, NULL, ssi_error_state }
+};
+
+static ssi_parser_t ssi_include_state[] = {
+    { 1, (char *) ' ', ssi_include_state, NULL },
+    { 7, "virtual", ssi_equal_state, offsetof(ssi_include_t, virtual) },
+    { 0, NULL, ssi_error_state }
+};
+
+static ssi_parser_t ssi_equal_state[] = {
+    { 1, (char *) ' ', ssi_equal_state, NULL },
+    { 1, (char *) '=', ssi_param_state, NULL },
+};
+
+static char ssi_echo[] = "echo";
+
+static void ngx_http_ssi_parse(ngx_http_request_t *r,
+                               ngx_http_ssi_filter_ctx_t *ctx,
+                               ngx_hunk_t *hunk)
+
 
     for ( ;; ) {
 
-        if (state == ssi_start_state) {
-            for (/* void */ ; p < ch->hunk->last.mem; p++) {
-                if (*p == '<') {
-                    state = ssi_exclam_state;
-                    length = 1;
-                    break;
-                }
-            }
-        }
+        for (/* void */ ; p < ch->hunk->last.mem; p++) {
 
-        for (/* void */ ;
-             p < ch->hunk->last.mem
-                 && (state > ssi_start_state && state < ssi_command_state)
-             p++)
-        {
             switch (state) {
 
-            case ssi_exclam_state:
-                switch (*p) {
+            case ssi_start_state:
+
+                /* tight loop */
+                while (p < ch->hunk->last.mem) {
+                    if (*p++ == '<') {
+                        state = ssi_comment_state;
+                        length = 1;
+                        break;
+                    }
+                }
 
-                case '!':
-                    state = ssi_dash1_state;
-                    length = 2;
-                    break;
+                /* fall through */
+
+            case ssi_comment_state:
+
+                if (*p == ssi_start[length]) {
+                    length++;
+
+                } else {
+                    length = 0;
+                    flush = 1;
+                    state = ssi_start_state;
+                }
 
-                case '<':
-                    state = ssi_exclam_state;
-                    length = 1;
-                    break;
+                if (length < 6)
+                    continue;
+
+                state = ssi_space_before_command_state;
+
+                /* fall through */
+
+            case ssi_space_before_command_state:
+
+                if (*p == ' ' || *p == '\t' || *p == CR || *p == LF)
+                     continue;
+
+                state = ssi_command_state;
 
-                default:
-                    state = ssi_start_state;
-                    length = 0;
-                    break;
+                /* fall through */
+
+            case ssi_choose_command_state:
+
+                for (i = 0; ctx->name[i].len; i++) {
+                    if (*p == ctx->name[i].name[0]) {
+                        state = choos[i].state;
+                    }
                 }
 
+            case ssi_command_state:
+                if (*p == ssi_include[n];
+                    n++;
+
                 break;
 
-            case ssi_dash1_state:
-                switch (*p) {
-
-                case '-':
-                    state = ssi_dash2_state;
-                    length = 3;
-                    break;
-
-                case '<':
-                    state = ssi_exclam_state;
-                    length = 1;
-                    break;
-
-                default:
-                    state = ssi_start_state;
-                    length = 0;
-                    break;
-                }
-
-                break;
-
-            case ssi_dash2_state:
-                switch (*p) {
-
-                case '-':
-                    state = ssi_sharp_state;
-                    length = 4;
-                    break;
-
-                case '<':
-                    state = ssi_exclam_state;
-                    length = 1;
-                    break;
-
-                default:
-                    state = ssi_start_state;
-                    length = 0;
-                    break;
-                }
-
-                break;
-
-            case ssi_sharp_state:
-                switch (*p) {
-
-                case '#':
-                    ctx->state = ssi_command_state;
-                    ctx->length = 5;
-                    return NGX_SSI_FOUND;
-
-                case '<':
-                    state = ssi_exclam_state;
-                    length = 1;
-                    break;
-
-                default:
-                    state = ssi_start_state;
-                    length = 0;
-                    break;
-                }
-
-                break;
             }
         }
 
-        if (state > ssi_start_state) {
-            ngx_add_hunk_to_chain(ch->hunk);
+            if (length == 6
+                || (length > 0 && ch->next == NULL)
+                || hunk_with_ssi) {
+
+                if (ctx->saved > 0 && flush) {
+                    add saved
+                    ctx->saved = 0;
+                }
+
+                for (c = ctx->in; c != hunk; c = c->next) {
+                    ngx_add_hunk_to_chain(ctx->last, c->hunk,
+                                          r->pool, NGX_ERROR);
+                }
+
+                add duped;
+                push duped_hunk, hunk, NULL;
+
+                n = length - (hunk->last.mem - pos);
+                for (c = hunk; c; c->next) {
+                    if (n > c->hunk->last.mem - c->hunk->pos.mem) {
+                        n -= c->hunk->last.mem - c->hunk->pos.mem;
+                        push NULL, c->hunk, NULL;
+                    }
+                }
+
+                ctx->in = c;
+            }
         }
 
-        ch = ch->next;
-        if (ch == NULL) {
-            ctx->state = state;
+    } else {
+
+        for (/* void */ ; p < ch->hunk->last.mem; p++) {
+            if (*p == ' ' || *p == '\t' || *p == CR || *P == LF)
+                continue;
+
+            ctx->state = ssi_command_state;
             break;
         }
 
-        p = ch->hunk->pos.mem; 
-    }
+        if (
 
-        if (state > ssi_start_state)
-            if (ngx_http_ssi_dup_hunk(r, ch->hunk) == NGX_ERROR)
-                return NGX_ERROR;
-
+    }
 }
 
 
-static ngx_http_ssi_dup_hunk(ngx_http_request_t *r, ngx_hunk_t *hunk);
-{
-    new dup_hunk
-    set dup_hunk
-    ngx_add_hunk_to_chain dup_hunk
+
+
+
 
-    ngx_test_null(ssi_hunk, ngx_push_array);
-    ssi_hunk->ssi_hunk = dup_hunk;
-    ssi_hunk->hunk = hunk;
-    ssi_hunk->pos = NULL;
-}
+
+
+
+