diff options
Diffstat (limited to 'app/nginx/src/http/modules/ngx_http_xslt_filter_module.c')
| -rw-r--r-- | app/nginx/src/http/modules/ngx_http_xslt_filter_module.c | 1147 |
1 files changed, 0 insertions, 1147 deletions
diff --git a/app/nginx/src/http/modules/ngx_http_xslt_filter_module.c b/app/nginx/src/http/modules/ngx_http_xslt_filter_module.c deleted file mode 100644 index 695f3bf..0000000 --- a/app/nginx/src/http/modules/ngx_http_xslt_filter_module.c +++ /dev/null @@ -1,1147 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_http.h> - -#include <libxml/parser.h> -#include <libxml/tree.h> -#include <libxslt/xslt.h> -#include <libxslt/xsltInternals.h> -#include <libxslt/transform.h> -#include <libxslt/variables.h> -#include <libxslt/xsltutils.h> - -#if (NGX_HAVE_EXSLT) -#include <libexslt/exslt.h> -#endif - - -#ifndef NGX_HTTP_XSLT_REUSE_DTD -#define NGX_HTTP_XSLT_REUSE_DTD 1 -#endif - - -typedef struct { - u_char *name; - void *data; -} ngx_http_xslt_file_t; - - -typedef struct { - ngx_array_t dtd_files; /* ngx_http_xslt_file_t */ - ngx_array_t sheet_files; /* ngx_http_xslt_file_t */ -} ngx_http_xslt_filter_main_conf_t; - - -typedef struct { - u_char *name; - ngx_http_complex_value_t value; - ngx_uint_t quote; /* unsigned quote:1; */ -} ngx_http_xslt_param_t; - - -typedef struct { - xsltStylesheetPtr stylesheet; - ngx_array_t params; /* ngx_http_xslt_param_t */ -} ngx_http_xslt_sheet_t; - - -typedef struct { - xmlDtdPtr dtd; - ngx_array_t sheets; /* ngx_http_xslt_sheet_t */ - ngx_hash_t types; - ngx_array_t *types_keys; - ngx_array_t *params; /* ngx_http_xslt_param_t */ - ngx_flag_t last_modified; -} ngx_http_xslt_filter_loc_conf_t; - - -typedef struct { - xmlDocPtr doc; - xmlParserCtxtPtr ctxt; - xsltTransformContextPtr transform; - ngx_http_request_t *request; - ngx_array_t params; - - ngx_uint_t done; /* unsigned done:1; */ -} ngx_http_xslt_filter_ctx_t; - - -static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r, - ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); -static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r, - ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); - - -static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, - const xmlChar *externalId, const xmlChar *systemId); -static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...); - - -static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, - ngx_http_xslt_filter_ctx_t *ctx); -static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r, - ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params, ngx_uint_t final); -static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s); -static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s); -static void ngx_http_xslt_cleanup(void *data); - -static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); -static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); -static char *ngx_http_xslt_param(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); -static void ngx_http_xslt_cleanup_dtd(void *data); -static void ngx_http_xslt_cleanup_stylesheet(void *data); -static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf); -static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf); -static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, - void *child); -static ngx_int_t ngx_http_xslt_filter_preconfiguration(ngx_conf_t *cf); -static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf); -static void ngx_http_xslt_filter_exit(ngx_cycle_t *cycle); - - -static ngx_str_t ngx_http_xslt_default_types[] = { - ngx_string("text/xml"), - ngx_null_string -}; - - -static ngx_command_t ngx_http_xslt_filter_commands[] = { - - { ngx_string("xml_entities"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, - ngx_http_xslt_entities, - NGX_HTTP_LOC_CONF_OFFSET, - 0, - NULL }, - - { ngx_string("xslt_stylesheet"), - NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, - ngx_http_xslt_stylesheet, - NGX_HTTP_LOC_CONF_OFFSET, - 0, - NULL }, - - { ngx_string("xslt_param"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, - ngx_http_xslt_param, - NGX_HTTP_LOC_CONF_OFFSET, - 0, - NULL }, - - { ngx_string("xslt_string_param"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, - ngx_http_xslt_param, - NGX_HTTP_LOC_CONF_OFFSET, - 0, - (void *) 1 }, - - { ngx_string("xslt_types"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, - ngx_http_types_slot, - NGX_HTTP_LOC_CONF_OFFSET, - offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys), - &ngx_http_xslt_default_types[0] }, - - { ngx_string("xslt_last_modified"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, - ngx_conf_set_flag_slot, - NGX_HTTP_LOC_CONF_OFFSET, - offsetof(ngx_http_xslt_filter_loc_conf_t, last_modified), - NULL }, - - ngx_null_command -}; - - -static ngx_http_module_t ngx_http_xslt_filter_module_ctx = { - ngx_http_xslt_filter_preconfiguration, /* preconfiguration */ - ngx_http_xslt_filter_init, /* postconfiguration */ - - ngx_http_xslt_filter_create_main_conf, /* create main configuration */ - NULL, /* init main configuration */ - - NULL, /* create server configuration */ - NULL, /* merge server configuration */ - - ngx_http_xslt_filter_create_conf, /* create location configuration */ - ngx_http_xslt_filter_merge_conf /* merge location configuration */ -}; - - -ngx_module_t ngx_http_xslt_filter_module = { - NGX_MODULE_V1, - &ngx_http_xslt_filter_module_ctx, /* module context */ - ngx_http_xslt_filter_commands, /* module directives */ - NGX_HTTP_MODULE, /* module type */ - NULL, /* init master */ - NULL, /* init module */ - NULL, /* init process */ - NULL, /* init thread */ - NULL, /* exit thread */ - ngx_http_xslt_filter_exit, /* exit process */ - ngx_http_xslt_filter_exit, /* exit master */ - NGX_MODULE_V1_PADDING -}; - - -static ngx_http_output_header_filter_pt ngx_http_next_header_filter; -static ngx_http_output_body_filter_pt ngx_http_next_body_filter; - - -static ngx_int_t -ngx_http_xslt_header_filter(ngx_http_request_t *r) -{ - ngx_http_xslt_filter_ctx_t *ctx; - ngx_http_xslt_filter_loc_conf_t *conf; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter header"); - - if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { - return ngx_http_next_header_filter(r); - } - - conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); - - if (conf->sheets.nelts == 0 - || ngx_http_test_content_type(r, &conf->types) == NULL) - { - return ngx_http_next_header_filter(r); - } - - ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); - - if (ctx) { - return ngx_http_next_header_filter(r); - } - - ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t)); - if (ctx == NULL) { - return NGX_ERROR; - } - - ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module); - - r->main_filter_need_in_memory = 1; - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in) -{ - int wellFormed; - ngx_chain_t *cl; - ngx_http_xslt_filter_ctx_t *ctx; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter body"); - - if (in == NULL) { - return ngx_http_next_body_filter(r, in); - } - - ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); - - if (ctx == NULL || ctx->done) { - return ngx_http_next_body_filter(r, in); - } - - for (cl = in; cl; cl = cl->next) { - - if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) { - - if (ctx->ctxt->myDoc) { - -#if (NGX_HTTP_XSLT_REUSE_DTD) - ctx->ctxt->myDoc->extSubset = NULL; -#endif - xmlFreeDoc(ctx->ctxt->myDoc); - } - - xmlFreeParserCtxt(ctx->ctxt); - - return ngx_http_xslt_send(r, ctx, NULL); - } - - if (cl->buf->last_buf || cl->buf->last_in_chain) { - - ctx->doc = ctx->ctxt->myDoc; - -#if (NGX_HTTP_XSLT_REUSE_DTD) - ctx->doc->extSubset = NULL; -#endif - - wellFormed = ctx->ctxt->wellFormed; - - xmlFreeParserCtxt(ctx->ctxt); - - if (wellFormed) { - return ngx_http_xslt_send(r, ctx, - ngx_http_xslt_apply_stylesheet(r, ctx)); - } - - xmlFreeDoc(ctx->doc); - - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "not well formed XML document"); - - return ngx_http_xslt_send(r, ctx, NULL); - } - } - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, - ngx_buf_t *b) -{ - ngx_int_t rc; - ngx_chain_t out; - ngx_pool_cleanup_t *cln; - ngx_http_xslt_filter_loc_conf_t *conf; - - ctx->done = 1; - - if (b == NULL) { - return ngx_http_filter_finalize_request(r, &ngx_http_xslt_filter_module, - NGX_HTTP_INTERNAL_SERVER_ERROR); - } - - cln = ngx_pool_cleanup_add(r->pool, 0); - - if (cln == NULL) { - ngx_free(b->pos); - return ngx_http_filter_finalize_request(r, &ngx_http_xslt_filter_module, - NGX_HTTP_INTERNAL_SERVER_ERROR); - } - - if (r == r->main) { - r->headers_out.content_length_n = b->last - b->pos; - - if (r->headers_out.content_length) { - r->headers_out.content_length->hash = 0; - r->headers_out.content_length = NULL; - } - - conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); - - if (!conf->last_modified) { - ngx_http_clear_last_modified(r); - ngx_http_clear_etag(r); - - } else { - ngx_http_weak_etag(r); - } - } - - rc = ngx_http_next_header_filter(r); - - if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { - ngx_free(b->pos); - return rc; - } - - cln->handler = ngx_http_xslt_cleanup; - cln->data = b->pos; - - out.buf = b; - out.next = NULL; - - return ngx_http_next_body_filter(r, &out); -} - - -static ngx_int_t -ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, - ngx_buf_t *b) -{ - int err; - xmlParserCtxtPtr ctxt; - - if (ctx->ctxt == NULL) { - - ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); - if (ctxt == NULL) { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "xmlCreatePushParserCtxt() failed"); - return NGX_ERROR; - } - xmlCtxtUseOptions(ctxt, XML_PARSE_NOENT|XML_PARSE_DTDLOAD - |XML_PARSE_NOWARNING); - - ctxt->sax->externalSubset = ngx_http_xslt_sax_external_subset; - ctxt->sax->setDocumentLocator = NULL; - ctxt->sax->error = ngx_http_xslt_sax_error; - ctxt->sax->fatalError = ngx_http_xslt_sax_error; - ctxt->sax->_private = ctx; - - ctx->ctxt = ctxt; - ctx->request = r; - } - - err = xmlParseChunk(ctx->ctxt, (char *) b->pos, (int) (b->last - b->pos), - (b->last_buf) || (b->last_in_chain)); - - if (err == 0) { - b->pos = b->last; - return NGX_OK; - } - - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "xmlParseChunk() failed, error:%d", err); - - return NGX_ERROR; -} - - -static void -ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, - const xmlChar *externalId, const xmlChar *systemId) -{ - xmlParserCtxtPtr ctxt = data; - - xmlDocPtr doc; - xmlDtdPtr dtd; - ngx_http_request_t *r; - ngx_http_xslt_filter_ctx_t *ctx; - ngx_http_xslt_filter_loc_conf_t *conf; - - ctx = ctxt->sax->_private; - r = ctx->request; - - conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", - name ? name : (xmlChar *) "", - externalId ? externalId : (xmlChar *) "", - systemId ? systemId : (xmlChar *) ""); - - doc = ctxt->myDoc; - -#if (NGX_HTTP_XSLT_REUSE_DTD) - - dtd = conf->dtd; - -#else - - dtd = xmlCopyDtd(conf->dtd); - if (dtd == NULL) { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "xmlCopyDtd() failed"); - return; - } - - if (doc->children == NULL) { - xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); - - } else { - xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); - } - -#endif - - doc->extSubset = dtd; -} - - -static void ngx_cdecl -ngx_http_xslt_sax_error(void *data, const char *msg, ...) -{ - xmlParserCtxtPtr ctxt = data; - - size_t n; - va_list args; - ngx_http_xslt_filter_ctx_t *ctx; - u_char buf[NGX_MAX_ERROR_STR]; - - ctx = ctxt->sax->_private; - - buf[0] = '\0'; - - va_start(args, msg); - n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); - va_end(args); - - while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } - - ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, - "libxml2 error: \"%*s\"", n + 1, buf); -} - - -static ngx_buf_t * -ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, - ngx_http_xslt_filter_ctx_t *ctx) -{ - int len, rc, doc_type; - u_char *type, *encoding; - ngx_buf_t *b; - ngx_uint_t i; - xmlChar *buf; - xmlDocPtr doc, res; - ngx_http_xslt_sheet_t *sheet; - ngx_http_xslt_filter_loc_conf_t *conf; - - conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); - sheet = conf->sheets.elts; - doc = ctx->doc; - - /* preallocate array for 4 params */ - - if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) - != NGX_OK) - { - xmlFreeDoc(doc); - return NULL; - } - - for (i = 0; i < conf->sheets.nelts; i++) { - - ctx->transform = xsltNewTransformContext(sheet[i].stylesheet, doc); - if (ctx->transform == NULL) { - xmlFreeDoc(doc); - return NULL; - } - - if (conf->params - && ngx_http_xslt_params(r, ctx, conf->params, 0) != NGX_OK) - { - xsltFreeTransformContext(ctx->transform); - xmlFreeDoc(doc); - return NULL; - } - - if (ngx_http_xslt_params(r, ctx, &sheet[i].params, 1) != NGX_OK) { - xsltFreeTransformContext(ctx->transform); - xmlFreeDoc(doc); - return NULL; - } - - res = xsltApplyStylesheetUser(sheet[i].stylesheet, doc, - ctx->params.elts, NULL, NULL, - ctx->transform); - - xsltFreeTransformContext(ctx->transform); - xmlFreeDoc(doc); - - if (res == NULL) { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "xsltApplyStylesheet() failed"); - return NULL; - } - - doc = res; - - /* reset array elements */ - ctx->params.nelts = 0; - } - - /* there must be at least one stylesheet */ - - if (r == r->main) { - type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet); - - } else { - type = NULL; - } - - encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet); - doc_type = doc->type; - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter type: %d t:%s e:%s", - doc_type, type ? type : (u_char *) "(null)", - encoding ? encoding : (u_char *) "(null)"); - - rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); - - xmlFreeDoc(doc); - - if (rc != 0) { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "xsltSaveResultToString() failed"); - return NULL; - } - - if (len == 0) { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "xsltSaveResultToString() returned zero-length result"); - return NULL; - } - - b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); - if (b == NULL) { - ngx_free(buf); - return NULL; - } - - b->pos = buf; - b->last = buf + len; - b->memory = 1; - - if (encoding) { - r->headers_out.charset.len = ngx_strlen(encoding); - r->headers_out.charset.data = encoding; - } - - if (r != r->main) { - return b; - } - - b->last_buf = 1; - - if (type) { - len = ngx_strlen(type); - - r->headers_out.content_type_len = len; - r->headers_out.content_type.len = len; - r->headers_out.content_type.data = type; - - } else if (doc_type == XML_HTML_DOCUMENT_NODE) { - - r->headers_out.content_type_len = sizeof("text/html") - 1; - ngx_str_set(&r->headers_out.content_type, "text/html"); - } - - r->headers_out.content_type_lowcase = NULL; - - return b; -} - - -static ngx_int_t -ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, - ngx_array_t *params, ngx_uint_t final) -{ - u_char *p, *last, *value, *dst, *src, **s; - size_t len; - ngx_uint_t i; - ngx_str_t string; - ngx_http_xslt_param_t *param; - - param = params->elts; - - for (i = 0; i < params->nelts; i++) { - - if (ngx_http_complex_value(r, ¶m[i].value, &string) != NGX_OK) { - return NGX_ERROR; - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter param: \"%s\"", string.data); - - if (param[i].name) { - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter param name: \"%s\"", param[i].name); - - if (param[i].quote) { - if (xsltQuoteOneUserParam(ctx->transform, param[i].name, - string.data) - != 0) - { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "xsltQuoteOneUserParam(\"%s\", \"%s\") failed", - param[i].name, string.data); - return NGX_ERROR; - } - - continue; - } - - s = ngx_array_push(&ctx->params); - if (s == NULL) { - return NGX_ERROR; - } - - *s = param[i].name; - - s = ngx_array_push(&ctx->params); - if (s == NULL) { - return NGX_ERROR; - } - - *s = string.data; - - continue; - } - - /* - * parse param1=value1:param2=value2 syntax as used by parameters - * specified in xslt_stylesheet directives - */ - - p = string.data; - last = string.data + string.len; - - while (p && *p) { - - value = p; - p = (u_char *) ngx_strchr(p, '='); - if (p == NULL) { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "invalid libxslt parameter \"%s\"", value); - return NGX_ERROR; - } - *p++ = '\0'; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter param name: \"%s\"", value); - - s = ngx_array_push(&ctx->params); - if (s == NULL) { - return NGX_ERROR; - } - - *s = value; - - value = p; - p = (u_char *) ngx_strchr(p, ':'); - - if (p) { - len = p - value; - *p++ = '\0'; - - } else { - len = last - value; - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter param value: \"%s\"", value); - - dst = value; - src = value; - - ngx_unescape_uri(&dst, &src, len, 0); - - *dst = '\0'; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "xslt filter param unescaped: \"%s\"", value); - - s = ngx_array_push(&ctx->params); - if (s == NULL) { - return NGX_ERROR; - } - - *s = value; - } - } - - if (final) { - s = ngx_array_push(&ctx->params); - if (s == NULL) { - return NGX_ERROR; - } - - *s = NULL; - } - - return NGX_OK; -} - - -static u_char * -ngx_http_xslt_content_type(xsltStylesheetPtr s) -{ - u_char *type; - - if (s->mediaType) { - return s->mediaType; - } - - for (s = s->imports; s; s = s->next) { - - type = ngx_http_xslt_content_type(s); - - if (type) { - return type; - } - } - - return NULL; -} - - -static u_char * -ngx_http_xslt_encoding(xsltStylesheetPtr s) -{ - u_char *encoding; - - if (s->encoding) { - return s->encoding; - } - - for (s = s->imports; s; s = s->next) { - - encoding = ngx_http_xslt_encoding(s); - - if (encoding) { - return encoding; - } - } - - return NULL; -} - - -static void -ngx_http_xslt_cleanup(void *data) -{ - ngx_free(data); -} - - -static char * -ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_xslt_filter_loc_conf_t *xlcf = conf; - - ngx_str_t *value; - ngx_uint_t i; - ngx_pool_cleanup_t *cln; - ngx_http_xslt_file_t *file; - ngx_http_xslt_filter_main_conf_t *xmcf; - - if (xlcf->dtd) { - return "is duplicate"; - } - - value = cf->args->elts; - - xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); - - file = xmcf->dtd_files.elts; - for (i = 0; i < xmcf->dtd_files.nelts; i++) { - if (ngx_strcmp(file[i].name, value[1].data) == 0) { - xlcf->dtd = file[i].data; - return NGX_CONF_OK; - } - } - - cln = ngx_pool_cleanup_add(cf->pool, 0); - if (cln == NULL) { - return NGX_CONF_ERROR; - } - - xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); - - if (xlcf->dtd == NULL) { - ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); - return NGX_CONF_ERROR; - } - - cln->handler = ngx_http_xslt_cleanup_dtd; - cln->data = xlcf->dtd; - - file = ngx_array_push(&xmcf->dtd_files); - if (file == NULL) { - return NGX_CONF_ERROR; - } - - file->name = value[1].data; - file->data = xlcf->dtd; - - return NGX_CONF_OK; -} - - - -static char * -ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_xslt_filter_loc_conf_t *xlcf = conf; - - ngx_str_t *value; - ngx_uint_t i, n; - ngx_pool_cleanup_t *cln; - ngx_http_xslt_file_t *file; - ngx_http_xslt_sheet_t *sheet; - ngx_http_xslt_param_t *param; - ngx_http_compile_complex_value_t ccv; - ngx_http_xslt_filter_main_conf_t *xmcf; - - value = cf->args->elts; - - if (xlcf->sheets.elts == NULL) { - if (ngx_array_init(&xlcf->sheets, cf->pool, 1, - sizeof(ngx_http_xslt_sheet_t)) - != NGX_OK) - { - return NGX_CONF_ERROR; - } - } - - sheet = ngx_array_push(&xlcf->sheets); - if (sheet == NULL) { - return NGX_CONF_ERROR; - } - - ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); - - if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { - return NGX_CONF_ERROR; - } - - xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); - - file = xmcf->sheet_files.elts; - for (i = 0; i < xmcf->sheet_files.nelts; i++) { - if (ngx_strcmp(file[i].name, value[1].data) == 0) { - sheet->stylesheet = file[i].data; - goto found; - } - } - - cln = ngx_pool_cleanup_add(cf->pool, 0); - if (cln == NULL) { - return NGX_CONF_ERROR; - } - - sheet->stylesheet = xsltParseStylesheetFile(value[1].data); - if (sheet->stylesheet == NULL) { - ngx_conf_log_error(NGX_LOG_ERR, cf, 0, - "xsltParseStylesheetFile(\"%s\") failed", - value[1].data); - return NGX_CONF_ERROR; - } - - cln->handler = ngx_http_xslt_cleanup_stylesheet; - cln->data = sheet->stylesheet; - - file = ngx_array_push(&xmcf->sheet_files); - if (file == NULL) { - return NGX_CONF_ERROR; - } - - file->name = value[1].data; - file->data = sheet->stylesheet; - -found: - - n = cf->args->nelts; - - if (n == 2) { - return NGX_CONF_OK; - } - - if (ngx_array_init(&sheet->params, cf->pool, n - 2, - sizeof(ngx_http_xslt_param_t)) - != NGX_OK) - { - return NGX_CONF_ERROR; - } - - for (i = 2; i < n; i++) { - - param = ngx_array_push(&sheet->params); - if (param == NULL) { - return NGX_CONF_ERROR; - } - - ngx_memzero(param, sizeof(ngx_http_xslt_param_t)); - ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); - - ccv.cf = cf; - ccv.value = &value[i]; - ccv.complex_value = ¶m->value; - ccv.zero = 1; - - if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { - return NGX_CONF_ERROR; - } - } - - return NGX_CONF_OK; -} - - -static char * -ngx_http_xslt_param(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_xslt_filter_loc_conf_t *xlcf = conf; - - ngx_http_xslt_param_t *param; - ngx_http_compile_complex_value_t ccv; - ngx_str_t *value; - - value = cf->args->elts; - - if (xlcf->params == NULL) { - xlcf->params = ngx_array_create(cf->pool, 2, - sizeof(ngx_http_xslt_param_t)); - if (xlcf->params == NULL) { - return NGX_CONF_ERROR; - } - } - - param = ngx_array_push(xlcf->params); - if (param == NULL) { - return NGX_CONF_ERROR; - } - - param->name = value[1].data; - param->quote = (cmd->post == NULL) ? 0 : 1; - - ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); - - ccv.cf = cf; - ccv.value = &value[2]; - ccv.complex_value = ¶m->value; - ccv.zero = 1; - - if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { - return NGX_CONF_ERROR; - } - - return NGX_CONF_OK; -} - - -static void -ngx_http_xslt_cleanup_dtd(void *data) -{ - xmlFreeDtd(data); -} - - -static void -ngx_http_xslt_cleanup_stylesheet(void *data) -{ - xsltFreeStylesheet(data); -} - - -static void * -ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf) -{ - ngx_http_xslt_filter_main_conf_t *conf; - - conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t)); - if (conf == NULL) { - return NULL; - } - - if (ngx_array_init(&conf->dtd_files, cf->pool, 1, - sizeof(ngx_http_xslt_file_t)) - != NGX_OK) - { - return NULL; - } - - if (ngx_array_init(&conf->sheet_files, cf->pool, 1, - sizeof(ngx_http_xslt_file_t)) - != NGX_OK) - { - return NULL; - } - - return conf; -} - - -static void * -ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) -{ - ngx_http_xslt_filter_loc_conf_t *conf; - - conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t)); - if (conf == NULL) { - return NULL; - } - - /* - * set by ngx_pcalloc(): - * - * conf->dtd = NULL; - * conf->sheets = { NULL }; - * conf->types = { NULL }; - * conf->types_keys = NULL; - * conf->params = NULL; - */ - - conf->last_modified = NGX_CONF_UNSET; - - return conf; -} - - -static char * -ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) -{ - ngx_http_xslt_filter_loc_conf_t *prev = parent; - ngx_http_xslt_filter_loc_conf_t *conf = child; - - if (conf->dtd == NULL) { - conf->dtd = prev->dtd; - } - - if (conf->sheets.nelts == 0) { - conf->sheets = prev->sheets; - } - - if (conf->params == NULL) { - conf->params = prev->params; - } - - if (ngx_http_merge_types(cf, &conf->types_keys, &conf->types, - &prev->types_keys, &prev->types, - ngx_http_xslt_default_types) - != NGX_OK) - { - return NGX_CONF_ERROR; - } - - ngx_conf_merge_value(conf->last_modified, prev->last_modified, 0); - - return NGX_CONF_OK; -} - - -static ngx_int_t -ngx_http_xslt_filter_preconfiguration(ngx_conf_t *cf) -{ - xmlInitParser(); - -#if (NGX_HAVE_EXSLT) - exsltRegisterAll(); -#endif - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_xslt_filter_init(ngx_conf_t *cf) -{ - ngx_http_next_header_filter = ngx_http_top_header_filter; - ngx_http_top_header_filter = ngx_http_xslt_header_filter; - - ngx_http_next_body_filter = ngx_http_top_body_filter; - ngx_http_top_body_filter = ngx_http_xslt_body_filter; - - return NGX_OK; -} - - -static void -ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) -{ - xsltCleanupGlobals(); - xmlCleanupParser(); -} |