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@ -35,6 +35,7 @@
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#include "string_func.h"
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#include "company_base.h"
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#include "smallmap_gui.h"
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#include "debug.h"
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#include "table/strings.h"
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#include "table/control_codes.h"
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@ -1302,6 +1303,13 @@ extern void SortNetworkLanguages();
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static inline void SortNetworkLanguages() {}
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#endif /* ENABLE_NETWORK */
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bool LanguagePackHeader::IsValid() const
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{
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return
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this->ident == TO_LE32(LanguagePackHeader::IDENT) &&
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this->version == TO_LE32(LANGUAGE_PACK_VERSION);
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}
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bool ReadLanguagePack(int lang_index)
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{
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/* Current language pack */
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@ -1313,9 +1321,7 @@ bool ReadLanguagePack(int lang_index)
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const char *end = (char *)lang_pack + len + 1;
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/* We need at least one byte of lang_pack->data */
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if (end <= lang_pack->data ||
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lang_pack->ident != TO_LE32(LanguagePackHeader::IDENT) ||
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lang_pack->version != TO_LE32(LANGUAGE_PACK_VERSION)) {
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if (end <= lang_pack->data || !lang_pack->IsValid()) {
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free(lang_pack);
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return false;
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}
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@ -1452,9 +1458,7 @@ static bool GetLanguageFileHeader(const char *file, LanguagePack *hdr)
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size_t read = fread(hdr, sizeof(*hdr), 1, f);
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fclose(f);
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bool ret = read == 1 &&
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hdr->ident == TO_LE32(LanguagePackHeader::IDENT) &&
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hdr->version == TO_LE32(LANGUAGE_PACK_VERSION);
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bool ret = read == 1 && hdr->IsValid();
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/* Convert endianness for the windows language ID */
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if (ret) hdr->winlangid = FROM_LE16(hdr->winlangid);
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@ -1491,6 +1495,7 @@ static int GetLanguageList(Language *langs, int start, int max, const char *path
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/* Check whether the file is of the correct version */
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LanguagePack hdr;
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if (!GetLanguageFileHeader(langs[i].file, &hdr)) {
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DEBUG(misc, 3, "%s is not a valid language file", langs[i].file);
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free(langs[i].file);
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continue;
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}
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