(svn r2290) - CodeChange: protect the next batch of commands. This brings us to a total of 61, which is 53% :)
- CodeChange: To correctly accept engine-prototypes, the best-player checking has been moved to its own function, I hope it functions the same as before.
- CodeChange: Added symbolic types of PlayerID, OrderID and EngineID. For engines also added GetEngine() and IsEngineIndex(), similar to the other such functions.
- CodeChange: To correctly build industries, some tables have been moved to build_industry.h. The only way to find out currently if an industry is valid in a climate is by looping all industries and checking if it matches. Also to comply with the patch setting build_rawmaterial_industries, it is assumed that these industries do not accept any cargo of any type. This can and probably should changed in the future to some flag in their struct. Also use _opt_ptr instead of _opt.
- CodeChange: implemented the HQ checking code inspired by MarkR2 in "[ 1190944 ] Many commands not checked for security". Unfortunately it is impossible to prevent only deleting a HQ by a modified client atm.
- CodeChange: For insert order and modify order their parameters are implicitely truncated to 8 bits, instead of the 16 bits said in the comments.

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#include "stdafx.h"

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#include "string.h"

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void ttd_strlcat(char *dst, const char *src, size_t size)

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{

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	assert(size > 0);

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	for (; size > 0 && *dst != '\0'; --size, ++dst) {}

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	assert(size > 0);

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	while (--size > 0 && *src != '\0') *dst++ = *src++;

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	*dst = '\0';

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}

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void ttd_strlcpy(char *dst, const char *src, size_t size)

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{

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	assert(size > 0);

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	while (--size > 0 && *src != '\0') *dst++ = *src++;

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	*dst = '\0';

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}

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char* strecat(char* dst, const char* src, const char* last)

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{

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	assert(last == NULL || dst <= last);

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	for (; *dst != '\0'; ++dst)

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		if (dst == last) return dst;

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	for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src;

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	*dst = '\0';

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	return strecpy(dst, src, last);

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}

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char* strecpy(char* dst, const char* src, const char* last)

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{

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	assert(last == NULL || dst <= last);

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	for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src;

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	*dst = '\0';

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	return dst;

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}