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Simplify check for valid user names in IRC_USER().
Patches from Federico G. Schwindt, thanks! (cherry picked from commit a44b7126227ba1118ec02b399e31b08102af5e8c and 6fbe9583753b2620da275676cde46a89cb4d06c2)
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@ -18,6 +18,7 @@
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#include "imp.h"
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#include <assert.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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@ -422,11 +423,9 @@ IRC_USER(CLIENT * Client, REQUEST * Req)
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punctuation is allowed.*/
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ptr = Req->argv[0];
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while (*ptr) {
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if ((*ptr < '0' || *ptr > '9') &&
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(*ptr < 'A' || *ptr > 'Z') &&
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(*ptr < 'a' || *ptr > 'z') &&
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(*ptr != '+') && (*ptr != '-') &&
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(*ptr != '.') && (*ptr != '_')) {
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if (!isalnum(*ptr) &&
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*ptr != '+' && *ptr != '-' &&
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*ptr != '.' && *ptr != '_') {
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Conn_Close(Client_Conn(Client), NULL,
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"Invalid user name", true);
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return DISCONNECTED;
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